If you find Crystal intriguing I suggest to checkout Elixir. And if static typing is more to your liking, then Gleam.
Both run on the BEAM (Erlang VM) which has a very robust concurrency model and resiliency built into the way you build applications.
I've been using Elixir for years now professionally (fullstack) and I honestly never want to go back.
Lol, egg me definitely thought along those lines. 😄