Answer 1

I think Xcode if u were using mobile or tab else android studio is best

Answer 2

It depends on your interest
Xcode works in only Apple to develop apple
When we go to android studio, it works in almost all platform and mostly used to build android apps hence can also make apple apps with kotlin multiplatform or flutter
And also it is heavier when it us compared to Xcode I.e eats lots amount of ram and cpu