Rasmus Hojlund made Premier League history as the Manchester United striker's double ensured his side survived a scare from lowly Luton in their 2-1 win on Sunday.
Sixth placed United's fourth consecutive league victory moved them within five points of fourth placed Aston Villa in the race to qualify for next season's Champions League.
"Of course I believe it's how you win games. You know we have to be together in good and bad moments. We have to help each other even when things are not going good. But what we are doing now is very nice and it's the way we have to follow," Onana told 'MUTV'.
"We have to continue like this because we have done nothing. We didn't do anything spectacular. Yet now we have to continue winning games, and that is the main thing. We have to try to win against every opponent and especially the next game is another final for us," he concluded.
The goalkeeper went on to add: "This is giving us more confidence. We are all happy, you know, when we win, especially this kind of game."