The market for multiplayer games, shooters especially, is already a mess, because people don't want to play a game that doesn't have an infinite pool of players to matchmake into, or a game that doesn't have all their cosmetics, or... etc. etc.

So this ends up being easier said than done. I've had success, but that's my friend group out of however many.

Try to find a shooter with a playerbase that doesn't use EAC/etc. - it's a crapshoot, unfortunately. You've got Valve's stuff and one or two outliers, but if those don't meet your group's genre needs, you're whomped.