Yep. Self-reviewing your own PRs is a large boost to both yourself and the team, and often one of the first things I encourage new-ish developers to do.
- 90% of the time when you self-review your own PR, you're going to spot a bug or some incorrect assumption you made along the way. Or you'll see an opportunity to clean things up / make it better.
- Self-reviewing and annotating your reasons/thought process gives much more context to the actual reviewer, who likely only has a surface level understanding of what you're trying to do.
- It also signals to your team that you've taken the time to check your assumptions and verify you're solving the problem you say you are in the PR description.
I always review my own PR before I expect someone else to, but I generally don't add comments. I just look it over and if I see something I want to fix I fix it. Adding comments for things I specifically want feedback on or am unsure about seems like a nice addition to the process though. I might start doing that too.
Even when I worked for myself and had CodeRabbit help me do MRs, I still did a self-review before pushing any change to main.
Self-review is very, very helpful.