I’m married to an athelete and I have two sporty kids, so PE has been easy for me once the kids picked their sports. (My son picked “everything” as his sport!)
If you have park & rec teams or other community teams, that’s a great way to learn team sports without spending a lot of money.
If you prefer individual sports, I highly recommend a martial art. I’m very impressed seeing what happens in a martial arts class. (And it’s very homeschooling friendly, whether the teachers know it or not, because any age is welcome to begin. A white-belt could be 5 years old or or 15 or 50.)
I do think romping around outside, skipping rope, climbing trees, riding bikes, etc. can be considered as PE. Anything to get those large muscles moving, the heart pumping, and the body and mind flexible!