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!

Typescript with ts-node the only viable language

Everything else subject to some other influencers whim. Unless you can join front end with backend, they are all for children and thus destined to failure

Only half /s

Run what you want. Understand that Typescript has what you need, in general. And break out when you can justify it. And you probably can't!