As you can write quite good English I suggest you write in English. It’s very unlikely anyone would answer this question in French. Also we are only going to ask you the obvious question - are you booting into Linux or Mac when thus problem happens? If it’s Mac, have a look at https://forum.audacityteam.org/t/installation-do-not-run-audacity-from-the-dmg/31711/1
Gale