I think the issue is with the functions php in the parent theme. It calls the slider in the parent theme. One time i copied the functions in the parent theme to the child theme functions.php and the site crashed. I am new to wordpress, So I am afraid if I make any other changes again the site will crash.

Hi, I made a child theme and the footer and the slider in the inc folder is copied by making a folder named inc. The footer works fine. but the slider always reverted though it is in the child theme folder also. I will be really grateful if you could support me. thank you!