I've treated my Xbox for about a month now and always well, but now the Xbox has problems connecting to the Wi-Fi whenever it has been off for a few hours, when you go to the settings it doesn't find any networks until you are restart them completely. (I have now temporarily connected them to Lan)
Does anyone know how to fix that, or is it because of my Xbox that something is broken?
Sometimes mine also has problems with the Wi-Fi which is probably a software bug
Yes. Hopefully just software.
Did you have any minor problems (bugs, crashes etc) with the console before?
It crashed every now and then but that was normal (with watch Dogs Legion I always had the problem that the game doesn't save and sometimes hangs up, but that was due to the game and is no longer…)