I find the plasma desktop environment and the programs it include, overwhelming. I mean, it's nice and fast, but in terms of how many options they put in front of you by default and in every single screen and aspect of them, it's just too much, and too much at all times. It's going to take me a while to get used to it.
Mastodon.....change your mind?...I would not know where to start. it is a step away/forward from twitter (as I understand it).....I have zero experience with either.
I see twitter as a gargantuan tax write off for its current owner.