I'm sorry you are having a bad experience.

It sounds like you have accepted some friend requests from some noisy/energetic people, and/or from people that you perhaps don't really care about. My experience is that unfriending people I don't actually care about (people I've only interacted with a few times a long time ago, for example), making a close friends list (people I care a lot about), and moving the 25%-ish people I care the least about to the acquaintance list has improved my experience a lot.

There are always some unusual cases - a cousin you mostly want to hear things from/about who loves all sorts of games, maybe. For those special cases, you can also control specifically that you don't want to hear from them about games.

I'm not really familiar with problems with events - I get a few event invites a month, and generally they are things I'm interested in going to. How many events are you being invited to? How many different people are involved in inviting you to them?

If you're using Windows, you could also try out the Facebook Messenger app to keep yourself on chat.

(I work at Facebook, but on infrastructure, not products.)