From video gaming to card games and stuff in between, if it's gaming you can probably discuss it here!
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I don't know how much you'd like it since the shooters on your list aren't super similar, but Xdefiant should be releasing soon and is f2p. I really enjoyed the closed betas. There's an open one June 21-23 if you want to give it a try.
Also if you enjoy roguelites, Crab Champions is cheap and very fun. It's in early access, so there's still a lot more content coming.
DayZ can be fun. Building up a base and trying to survive together. A bit of a learning curve but a very social game. Especially if you find a good private PVE server.
Insurgency Sandstorm is my go to. 8 player co-op vs ai bots, but with a degree of realism. A well placed headshot will drop an enemy instantly but the same can happen to you.
Halo MCC is cheap on Steam right now. Lots of games in one, single, coop and competitive multiplayer. Looks like you like shooters. Firefight is basically a horde mode as well if that's your cup of tea.