Thanks for answer. I'm not into web things so I will not choose Elixir.
Currently I'm learning Python and Rust and I like both of them. I've just read that Scala is based on virtual machine of Java and I hate Java, so as You said I will choose probably Haskeel or OCaml.
Probably OCaml because I'm such person that don't like to choose 'the most common' things in life, and Haskell is more popular than OCaml.