I always see all these awesome cafe and apartment levels and when I try to make ones they come out looking terrible.How do I make these ? (Sorry,I know I just asked one question a couple minutes ago)

I have the same problem from time to time. Google a place you want to create (A hotel/motel or something else) and save it on your phone or somewhere else where you can view it instantly. Than look at the picture and try to recreate certain elements like chairs, tables, walls etc.

It's a good help when you have those problems.