Why can't I input programs into my calculator?

Question

Still a coding question, I can't import my programs to my casio fx-9750gii, why not?

Answer 1

Maybe this will help?
https://youtu.be/HkmdZv7oWvY

Answer 2

I’ve tried it, but it won’t work. I can only import .g1m and .g2m, but I can’t find any. All I get are .rar or .zip, and the occasional .txt or .cat.