A used framework 13 might be something for you

Have you seen https://starlabs.systems/ ?

Check out HP ProBook 455 G10, it should check most of what you want. Not sure about price, though. My colleague has model 2 generations back and uses openSUSE on it without problems.

https://www.tuxedocomputers.com/de/Linux-Hardware/Linux-Notebooks.tuxedo