Should I teach students who doesn't know computer science C or JavaScript first?

https://programming.dev/post/47695080

I don’t know how old your students are, but there is also MIT Scratch.

Scratch - Imagine, Program, Share

Scratch is a free programming language and online community where you can create your own interactive stories, games, and animations.

+1 to scratch, I’ve used it to both teach kids at one of those “stem summer camps” and adults who do recruiting for tech firms. Both groups were able to pick it up pretty quickly