I'm not the biggest fan of listing favourite / best / worst games because the choice is so wide and most of the time I just forget about some of the titles if I have to pick only five, but if I had to, as of now it would be (2010-2021);
Kingdom Come Deliverance
Black Mesa
New Vegas
Doom Eternal
Wasteland 3
and I can't stop myself from including DUSK.

I'm not going to get into honourable mentions because the list would be way too long ;) As for multiplayer games definitely Squad, Mordhau (Chivalry II now as well I guess) and Phasmophobia gets a mention too because it's actually a lot of fun singing creed songs to a ghost.