Mauricio Pochettino felt his Tottenham players deserved more from what he described as their best performance of the season in a dramatic 2-1 defeat at Inter.
With five minutes remaining at San Siro in their Champions League Group B opener, Spurs led thanks to Christian Eriksen's heavily deflected strike.
Pochettino's side looked in little danger of dropping two points, let alone all three, until Inter captain Mauro Icardi lashed in a superb 85th-minute volley and, in a stunning finale, Matias Vecino headed in from a corner in stoppage time.
The defeat was Spurs' third in succession - the first time they have endured such a run since Pochettino took over in 2014 - but the Argentine was not too disheartened by the overall display.
"I'm happy with the performance, we dominated but of course it's cruel the lesson at the end because the team deserves more. It was the team's best performance since the beginning of the season," he told BT Sport.
"We're so disappointed and annoyed because the players deserve more. In two actions we concede two goals. Until we concede the first goal the game was under control. After we conceded, everything can happen in a place like San Siro.
"Now it's so important to look forward and try to understand that is football and when you're in a negative period you have to bounce back."
Tottenham visit Brighton and Hove Albion in the Premier League on Saturday and Pochettino urged the importance of improving his side's defending at set-pieces, as well as their ability to see out matches after losing from a winning position for the second time in three games.
"It can happen in football, you can only fix that by working harder than before," he said. "We cannot say it's bad luck, we made some mistakes and sometimes you pay.
"We are suffering the punishment of our mistakes, that is football. Yes it happened at Watford, it's not 10 games it happened, but it's true in the last three games in two we were in winning positions and lose. We need to review and try to improve.
"It's so difficult to win, now in that negative period, the most important thing is to be calm and assess in the best way and understand why and help the team to bounce back again. The next game is another opportunity to win and stop that period of negativity."
|Aduriz joins Messi, Ramos in LaLiga history books|
|We have a plan - Ravens coach Harbaugh prepared for Flacco return|
|´It´s difficult to accept´ - Gracia calls for introduction of VAR|
|LaLiga press on with overseas match plan despite Barcelona withdrawal|
|PSG open Coupe de France defence at fifth-tier Pontivy|
|Hazard backs Sterling as Neville reveals England star´s Euro 2016 concerns|
|Everton 2 Watford 2: Digne salvages draw with 96th-minute free-kick|
|Barcelona could ´steal´ Kane, says Pochettino|
|Oakland Raiders fire general manager McKenzie|
|Struggling Villarreal appoint Garcia Plaza as Calleja successor|
|Warriors assign Cousins to G League team|
|Barcelona pull out of plan to play LaLiga game in Miami|
|Pochettino to keep an eye on Inter when Spurs face Barcelona|
|Pochettino confirms Walker-Peters set to start against Barcelona|
|Denver Nuggets add free agent Young|
|Topping Group A no magic wand for an easy knockout draw, says Simeone|
|The cake has been made, now we need the cherry - Ancelotti targets repeat at Anfield|
|Lloris braced to face ´one of the best in history´ in Messi|
|Tuchel expects Neymar to face Red Star|
|Foden signs Manchester City deal to 2024|
|It happened to me! - Valverde laughs off Dembele timekeeping|
|´Projecting´ an Argentina return? Messi met with AFA president and Scaloni|
|Erasmus expects to leave head coach role after World Cup|
|Chelsea issue suspensions pending investigation into Sterling incident|
|Kane is extraordinary – Valverde hails reported Barcelona target|
|Man behind Naomi Osaka´s rise wins WTA Coach of the Year|
|England name unchanged Test squad as Willey returns for West Indies ODIs|
|Spalletti: No issue with Icardi watching Superclasico in Madrid|
|Klopp confirms 2013 talks with ´chatty´ Napoli president De Laurentiis|
|Sri Lanka spinner Dananjaya suspended due to illegal action|
|His reaction was just brilliant – Klopp praises Sterling for response to abuse|
|Gomez renewal a ´smart decision´ for both parties – Klopp|
|Magnificent Molinari named European Golfer of the Year|
|Barcelona best option for Frenkie de Jong, insists midfielder´s father|
|Gronkowski on Miami Miracle: ´Got to make that tackle´|
|Tottenham youngster Walker-Peters signs on until 2023|
|Juventus ´more of a family´ than Real Madrid - Ronaldo|
|Kingsley Coman contemplates retirement if injury nightmare continues|
|McVay ´sick´ over offensive failings as Rams coach takes blame for loss|
|Calleja axed as Villarreal coach|
|Kenyan Drake on Miami Miracle: I couldn´t let Gronk tackle me!|
|Ronaldo: I deserved Ballon d´Or, the numbers don´t lie|
|Rugby Australia to make Cheika decision this month|
|England defender Gomez signs new Liverpool deal|
|Ronaldo wants to see Messi follow him to Italy|
|Neymar happy to play in any position for PSG - Draxler|
|Paine insists he is ´fine´ after taking blow to finger|
|Ponzio: River players will be ´idolised´ for Libertadores success|
|Champions League permutations: How Inter, PSG and Liverpool can progress|
|Kohli: India were better and deserved to win|
|Bears shut down Goff, Rams|
|India survive dramatic finish against Australia|
|Klopp calls for electric Anfield atmosphere against Napoli|
|Saints clinch back-to-back NFC South titles, Bears trump Rams|
|Bucks improve to 2-0 against Raptors with win in Toronto|
|Black Caps include Patel for Sri Lanka Tests|
|Maidana: River want Real Madrid clash|
|Cowboys top Eagles in OT behind stellar Cooper display|
|AC Milan evaluating Fabregas signing – Leonardo|
|WATCH: Steelers´ chance at game-tying field goal slips away|
|Hayne will plead not guilty to charges, says lawyer|
|Boca boss Schelotto: The only thing I feel is sadness|
|Cardinals´ Fitzgerald makes NFL history with most receptions for one team|
|River Plate´s Copa Libertadores star Gonzalo Martinez confirms January departure|
|Klopp: I was never worried about Salah´s form|
|Packers QB Rodgers sets NFL record for most passes without an interception|
|World Cup bulking hampered Man United form – Lukaku|
|Leonardo rules out Ibrahimovic Milan return|
|Warriors´ Green to return against Timberwolves|
|I feel for him… we´ll make it work – Butler responds to Embiid´s frustration|