I can't directly favorite or boost https://snac.tesio.it/giacomo/p/1792074929.102921 by @giacomo for some strange reason, but it's great. My only quibble is where to put Common Lisp or Racket. Even though I love Lisp, both seem quite complex. Are they really simpler than Go? Anyways, here's the post:
I strongly encourage you to use anything but a language that can be compiled by different totally independent compilers/interpreters.
My favourite are #Oberon and #C.
#Myrddin and #Hare are potential candidates (despite having one single implementation) because of their current simplicity.
Some might even argue for #Lua, a #Lisp (a #Scheme?) or, god forbid, a #BASIC.
Any language complex enough that it can only be compiled by one or two corporate-backed compilers are going to backfire on your users in the long (or even short) run.
#Rust is way too complex.