I only used to have it for work. Altmetrics were largely driven by tweets unless any 'real' media took an interest. However, I mostly ended up using it to echo anti-Ryanair & anti-Tory views. Made leaving it quite simple. Also, a lot of science moved to Mastodon.
I follow a small number of people, browse the Followed feed in chronological order, and never miss a tweet from someone i follow.
I do not browse For You (algorithmic reccomendations), i do not keep up with drama, and i used uBlock to delete the Trending section from my sceen. I don't get a lot of notifications, but if i did i'd have to get used to ignoring them.
This is the way. Twitter is inherently mediocre, but it is made interesting by the people on it, so if you follow the rules above you can have a pretty good time.