Most FPS games that I haven't been playing for years.
I'm complete shit at CS:S and CS:GO, and since the community is toxic, I don't play either anymore.
Rainbow 6: Siege is VERY fun, especially Terrorist Hunt, ( Although it can get boring. ) but I'm terrible at multiplayer, and everybody that I've encountered on casual is either silent or a dick :/ I don't even bother with competitive, I don't like that kinda stress when I play a game for fun.
I'm good at the singleplayer in Mount & Blade: Warband, and With Fire and Sword. However, I'm very bad at multiplayer. I think it's because I'm so unskilled at blocking without a shield, which tends to get me killed rather quickly, unless I'm an archer or using a crossbow.
A game that isn't very mainstream, Subnautica, scares the hell out of me. I think I have Thalassophobia, when things chase me underwater or I go so deep that I can't see, I freak the hell out. Therefore, I can't really get proper building materials or good blueprints, and kinda hamstring myself in progression. I don't know why I bought it, it was probably a waste of money.