Can I save my data? Tablet Lenovo Duet 5 returns to login 1 second after login because disk is full and Android can't start

Hello,

I was downloading a little thing when I see a notification of short disk space, I verify and 5,6 GB left so I didn't pay attention.

Maybe ChromeOS was also downloading a update, I was in v137. A new notification said "no more disk space, disabling Android file system".

So now after login, I see the desktop 1 second, then black screen for 3 seconds, then login screen again.

ChatGPT says my best option is to factory reset "Powerwash" from the login page, as it's not possible to access the disk to free some storage or to boot on Linux via USB without developer mode.

Is my favorite AI robot right?