It feels like anything is mowed down on the internet. I’ve been a dev for a long time too, and I never feel sure when I chose a stack for a new toy project (in my day job I rarely get to chose, so that’s a non issue there)
Learn as many languages as you can!
The first language we learn is always the hardest because we are learning both the syntax and the concepts of programming at the same time. Most languages have a pretty large overlap in concepts, so you’ll mostly just be learning syntax, which is easy to pick up.
Each language that you learn will likely introduce you to some concept you haven’t used before, which makes it that much easier to learn the next language and gives you a new way to think about problems no matter what language you’re using!
I try to learn one language a year, even if it’s not directly applicable to my job. In past years, I’ve learned Go, Rust, Rockstar, Perl (and more). This year I’m learning Lisp and it’s a ball so far!