Crash Minecraft - Map issue - Can't connect Microsoft account

Hello,

Three problems:

Since the Nether Update, very regular game crashes (about 10 times an hour, sometimes more). Note that this only seems to take place during cooperative games on split screen (solo, no problem).

During my last game (split screen), I noticed that the map, in hand or in the toolbar, does not update.

Last problem, as with the previous version, I am still unable to link my Microsoft account, a message telling me that it is already linked (see attachment).