Girls, how do you guys flip your babies from tummy to back? Mine crawl…

Girls, how do you guys flip your babies from tummy to back? Mine crawls, then does a somersault and onto its back, or tries to sit and may back up. Everything would be fine if it happened on the floor she hits her head and cries. Now she started crawling, gets out of her rug and goes on bare floor and this happens often. I'm just curious is that normal or only my baby is clumsy))) and scary hitting her head so often