I’d also add that it’s helpful to have a review guideline.
When I get to the PR phase, I’ve already done the design work, considered the trade-offs, and am asking folks to check that the code is mergeable per our guidelines.
A pet peeve of mine are reviewers with a bone to pick who will leaving blocking comments to redo the work in the way they would have approached it.
A guideline helps here because you can, along with your team, manage expectations for the process.
Some folks like to throw up code for critiques. They use PRs to get feedback on the design/approach itself. That can be useful!
Going in to manage expectations helps smooth things along so that you’re giving the constructive feedback the author is looking for.