@Federiko
Is a Recalbox OS problem?
I believe not, otherwise more users would be reporting.
I can use the ssh, What I can do?
You can use some SSH command:
https://recalbox.gitbook.io/documentation/v/francais/tutoriels/systeme/acces/dossiers-et-commandes-ssh
But, you need to find out what you're doing wrong, problems like that usually happen by:
Incompatible theme (using the default theme solves the problem)
Low quality storage device (original class 10 SD cards are recommended)
Corrupted storage device (plugging the storage device into windows and checking for errors can resolve)
Shutting down the system wrongly / Removing power without shutting down the system (you need to shut down correctly through the main menu)
Some kind of mishandling (the user just needs to analyze what is changing before the system crashes)