I'm likely older than the majority of the posters here, so keep that in mind while reading. When I played, coach would say a few last words in the locker room and hand it off to the captains. Captains would say whatever they wanted and usually concluded with the Lord's Prayer. If you didn't care to participate, you dealt with it for the 15 seconds or so. I suppose if you were Jewish, Buddhist, Islam, whatever, you used that opportunity to chant out a few faith-specific sentences. Whatever works for you.
I don't recall anyone running home and complaining to their parents (sarcasm intended). Of course, while we were kneeling during the prayer, we were all imagining ourselves on the field knocking our opponents head off (a bit more sarcasm). After the game, some players from both teams would meet and midfield, kneel and offer up whatever intentions they felt were appropriate. I just looked at is as a show of sportsmanship and gratitude no one was seriously injured or offering their faith-specific intentions for anyone who left on stretcher.
Again, I go back to the days before cancel culture, "Karens", etc when some "offended" person would scream "I don't like it and I want it stopped!!!"
I miss those days