How would a dumper feel if a dumpee reached out?

I’m (27F) thinking about eventually reaching out to my ex (22M) to just lay all my cards on the table and ask for us to give it one more shot.

I think my ex is exhibiting classic avoidant behaviors, but I want to put myself out there one last time to know that I did everything I could and didn’t leave any stone unturned.

It’s been about 3 weeks since he unexpectedly ended things, and I’m not ready to reach out yet, but I was wondering if y’all had any thoughts/advice on this.

I know I’m putting myself in a very vulnerable position and might come across as super pathetic, but I don’t want my ego and fear to keep me from going after what I want. I’d love to hear any advice, especially from male dumpers!!

Thanks in advance for your input!!