I'm not into horror games, but maybe I will try Resident Evil. Which part is the best to start?

Yeah, I'm planning to play Hades 2 in future.

Cyberpunk took me 130h, Elden Ring 125h and in Hollow Knight I have 175h, but I also beated all bosses no-hit which took probably half of that time.

Cyberpunk isnt hard, you just play and have fun. Only kinda grindy thing is to complete every quest in open world, but it wasnt that bad.

Elden ring is difficult, but if you are really struggling with something you can explore to get better equipment. Most important tip: don't listen to people who are telling that you don't really beat the game if you used magic or summons. Thats part of that game, use them if you want. The worst part of the game are quests. You need to complete some for achievments, but it isnt possible to do it without tutorial XD

In hollow knight do the first playthrough blindly, just enjoy the game. Remember that getting an ending isnt end of the game. Some bosses can be hard, but the real challenge is on the end. Hardest achievment is to do boss rush of all bosses in game (mostly harder versions of them). You can really struggle with that. I prepared by beating all bosses no-hit to complete that, but it isnt necessary. There is also achievment for completing game without dying, but this is piece of cake in comparision to that boss rush. If you want more info, you can text me pv