Is it normal for 7 month old to not be crawling?

My 7 month old son is only just starting to push himself forward on his stomach a few inches he doesnt go on his knees yet or rocks yet. I see babies starting to crawl and climb things to stand up by 5 - 6 months old so is it normal that my 7 month old is only just now starting to move around like half soldier crawling or am I not doing enough to teach him and he should be already crawling by now ?

EDIT - thanks ladies I feel stupid for even asking I just feel judged sometimes from people around me they expect a baby to be walking by 10 months 😂😂