Header and footer gone when using child theme and other things


So I started building my website with JupiterX. Created my own header, footer, changed some colors, etc.

But then I noticed that some translations are wrong in in the Parent theme. So I decided to select the child theme and try to translate some things since I don’t want to lose the translations when updating wordpress or the theme. But then I noticed my Header, Footer, changed some colors, etc. are completely different.

Now is my question is it possible to get the header, footer, changed some colors, etc from the parent them to the child theme? Or do I have to redo everything?