Pochettino was speaking after the Blues suffered a 1-0 defeat to Manchester City in the FA Cup semi-finals on Saturday evening.
Despite creating the better chances, Chelsea drew a blank in front of goal, Nicolas Jackson the guilty party on three occasions before Bernardo Silva scored the decisive strike six minutes from time.
For the second time in less than two months, Pochettino witnessed his side lose by a solitary goal at Wembley Stadium, the other occasion being the EFL Cup final loss to Liverpool.
The West Londoners also wasted opportunities during that showpiece event, and the double disappointment leaves Chelsea's European qualification hopes dependent on their remaining results in the Premier League.
'Chelsea must learn from lack of ruthlessness'While Man City created their own fair share of chances, Chelsea's squandered openings proved costly, and Pochettino did not shy away from admitting that his team must improve in the final third.
The Argentine told reporters, as quoted by football.london: «In football, the most important thing is to be clinical and to not concede. We competed well, I cannot say we were the better side because that in football is difficult to measure.
»The most important thing is we competed. Competing in this way, we need to take positives from the game. This type of group of players needs this type of moments in games.
«Now it's about to take the positive things and try to build in the things that we need, the areas we need to improve. Now is the time to finish the season in the best way and then to speak about how we can be better next season.»
Read on sportsmole.co.uk