United led by two goals at half-time, thanks to Alejandro Garnacho and Kobbie Mainoo, before Jeremy Doku scored a late goal.
Guardiola attributed the defeat to his own tactical errors, saying, “My decisions left us in the wrong position to attack them.
The game plan was my mistake.” He acknowledged the team’s strong response in the second half but felt his tactics were off.
Despite the disappointment, Guardiola praised the team’s overall performance this season and expressed optimism for the future, saying they will celebrate their achievements and come back stronger next season.