It's still early :)
My dd wasn't much of a crawler. At 7 months she was pulling herself up and cruising while holding onto things and by 9.5 months she was running around the house by herself.
She sounds like she's doing great!
My sister "army-crawled" until she was a year, and then went straight to walking. My niece crawled at 8 months, then walked at 9. And I crawled from 10-11 months then walked. Every baby is different.
Every kid is different! I have a friend who's baby hasn't crawled/walked yet and she is 12 months, she just has no interest so she rolls around lol its definitely okay!