Not really a genre, but PvP anything. I'm not competitive by nature, and I don't enjoy losing enough to feel motivated to try to "git gud". So any game or genre that is primarily or only focused on this is already out. I do generally enjoy any kind of co-op or campaign mode that might exist as part of games that are primarily played for their PvP, though, so it's not really the genre I hate, it's the competition aspect.
As for genres not covered by the above: gachas, realistic sim/management games (e.g. sports games, realistic racing games, Farm Simulator, etc.), match-3 kinds of ""puzzle"" games, and arcade-y games (I already know I suck, I don't want to play a game that will score me and actually show me the C. I also don't really enjoy the idea of replaying the same level over and over to get a higher score.).
Oh, and I'm not a super huge fan of "action" games (or "character action" or "stylish action" or whatever we're calling these now -- I can't keep up). I don't have the attention span (to be able to memorize all of the abilities and their use cases and track my character's place in the state machine, for planning combos and reactions) or reaction times for these. Sucks because generally this is a combat system I can't get into, inserted into a game I would otherwise enjoy.
There will of course be exceptions to this, but generally it's these.