"V páté minutě už jsme prohrávali."

[loudastepan]

Jste si jisti, že trailing se používá jako prohrávat?

[VladaFu]

3 lose a competition [intransitive, transitive usually in progressive] to be losing in a game, competition, or election

The Democratic candidate is still trailing in the opinion polls.

trail (somebody) by something Manchester United were trailing by two goals to one.

trail in/home (=finish in a bad position) He trailed in last after a disastrous race.

https://www.ldoceonline.com/dictionary/trail

[BrianG1941]

Why is we were already losing in the fifth minute not accepted

[VladaFu]

Added this and a bunch of other options.