After i saw that others was joining, i did a few more patterns to test you on GAs/RW changes, and i must say your handling it very good! If you do this on your practical you will probably pass. great job!
All good on my side as well, I agree on the low altitude in the lefthand downwind. But you quickly changed it to right hand (anyway this is not ATC but airport procedures… unless you have access to the charts you can’t really know.).
I did vacate left as I wanted to go on the north side. But was quickly cleared to cross.
Maybe a bit early for the go around to the traffic behind, how about a runway change with a final joining ? In pattern practice it is not uncommon.