I would really like to help but I can't read French to understand your issues. The Microsoft translator doesn't work well enough either. You may be able to use the online chat system here: https://helpx.adobe.com/support.html
Click on the "chat" icon in the lower right corner of the screen.
The most common "crashing" issue discussed on this forum involves video driver conflicts.
In you quest for other editors, take advantage of the free trials. Magix and Cyberlink produce good consumer priced NLE. I've tried them briefly but like Premiere Elements much better.