I have 5 boys, oldest 22, youngest 13. None of them have ever been into football, playing or watching. I doubt they could tell you anymore than the basics about football. The only time they've played it has been in PE.
They've not been left out in the playground, there are plenty of other boys who don't have in interest in it, or do but don't always play/talk about it. They've made many lovely friends and can talk about many other things with people that aren't about football.
My ex (their dad) doesn't like football, my DP doesn't like football. I think I like it more than any of them (and I only watch the World Cup and Euros)
Things my boys do and talk about - Scouts, fencing (the sport rather than the wooden things in gardens), trampolining, gymnastics, tap dancing, drumming, violins, guitar, ukulele, physics, maths, tv programmes, films, music, video games, books.
They really don't need to like football to be able to have conversations with other people. In fact if all someone can talk about is football I'd say that's a pretty bad thing!