This is taken from an interview with the manager of Mansfield Town describing his team's win. You can see the positive language he uses to describe his team's performance - it was well deserved and not lucky at all:

'No fluke' - Mansfield Town boss Nigel Clough reflects on Sheffield Wednesday win

Clough, the former Sheffield United boss, reflected: "I thought second half we were absolutely outstanding. What a goal it was too - 32 passes, I'm told, leading up to the goal. It was a magnificent finish. I thought the win, based on that second half performance, was deserved. We seemed to grow in the confidence as the game went on (Yorkshire Live August 2023)

https://learnenglishthroughfootball.com/weekly-football-phrase-no-fluke/

The result was not a fluke for Manchester City against Chelsea