8 months turning 9 months in 2 weeks

my baby is turning 9 months in 2 weeks and he still doesnt know how to crawl. He instead goes backwards when he tries to crawl. However, he is able to shift his body 360. Can see he is trying to stand on his own but unable to. So much pressure because people are telling me he should be able to crawl / stand when holding something at his age.