You should try world if you can. Rise has too much systems bloat in my opinion. World was my first monster hunter and I have over 200 hours and I am still not done. Rise added so much stuff with palicos and palamutes that I couldn't be bothered to do. It tipped the scales just a bit too much towards systems bloat in my opinion. I haven't played generations but from my understanding, it isn't as modernised as the current iterations of monster hunter so that may be causing you some friction.

There's not much to get. You just hunt monsters. When (if) it clicks, everything else becomes secondary. Any quest, story, goal, and grind, is just an excuse to go and dance with the game's monsters again.

There's a very rewarding feeling in how much winning feels like something you did yourself (more with knowledge than skill IMO), and not something the game just "let you" do.