I find it difficult every time there are many mistakes I learn

Answer 1

"Trial-and-Error" bruh.

it normal for early first days to week you code.
when you "get used to it" , error will go less.

focus on 1 language until you get used to , then move
to another.

My first language were Cobol / A* , they extinct these days , even Pascal. You need to adapt as fast as you can before extinction.

Answer 2

it is like learning how to drive a car. experience, experience and experience.

the same with programming. practice, practice and practice. determination.

also, try to see the big picture. ask yourself why do you want to become a programmer? what do you want to build? do you wanna develop business or web software? ...
different programming languages have their own specific functions. for example, JavaScript is mostly used to build web applications while java business applications (mostly)...

fail doesn't exist, it is just a reference experience 😉