Broked the / repository

I was managing access permissions for the / repository with nautilus in sudo mode, and I accidentally broke it by choosing ' No access' to others, now I have this:

Is there a way to repair this ?

Thank you for reading this error of a stupid beginner.

You can try this

Car you tell the hardware specifications of your system

Dell LatitudeE5470
Intel Core i5-6300U
Intel HD graphics 520
16Gb of RAM
SSD 512Gb

OS: ZorinOS Core 16.2

Enabling SGX didn't resolve the problem, it just say now the 2 up lines you can see on my rhe picture

I am really in trouble because it's my only computer and I have bo backups

Problem resolved, I entered grub mode and cahnged permissions for / with chmod

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