Final Cut Pro trial don't stop crashing

Final Cut crashes every time I try to open a project. (no matter the project). I have done all the updates. I tried with Davenci just to see if the problem was with my files or my hard drive, but it works with Davenci. So the problem must come from Final Cut.

Could you give us some tech specifications?, video information (FPS, CODEC, HD, 4K, 6k... HDR, SDR, RAW), project settings. How are the video imported to FCP library? (transcoded, optimised to proRes, proxy, ...). If you don't give us more information we won't be able to help you.
I use both FCP and Resolve and they normally work fine, but are very different

And to go a step further, would be helpful to know your Mac model/year/OS, and the version of FCP you're attempting to run.