This is my typical experience as well, too many people don't do a code review of their own PR first.

When I was a junior, I had this coworker who did all my reviews. I was doing my absolute best and wanted to show that I was learning, so I would review all my work before submitting it and think, how would he review and respond to this code.

That just stuck with me and it's my normal practice now.

I eventually learned that's not as normal as I thought. I also tend to give better code reviews than others.

Edit: the other thing I do is check in with who will be reviewing my code well before I submit anything someone might think is weird and have a discussion about it before the reveiw. If it's weird, there might be a better way unless were stuck due to technical debt or something, and doing that early vs at the end usually saves time.