With a little bit of vibe-coding I wrote a tool to help me find and kill stale processes called psdoom. It's been great at helping me get back some of those port numbers and I decided to put it up on pypi.
You can start it by running:
uvx psdoom
And it looks like this:
The interface will present you with a search bar and a table with results. After searching you can select from the table to make sure processes stop running.
Enjoy