Can anyone help me with this?

Anyone know what’s up with my system saying “Error while saving settings Could not write to files”

perhaps one of the folders of warthunder has been set to read-only or something? though im not sure how that could happen on console.

maybe lack of storage?

There is a problem with write security enabled or with a custom skin on PS-4 or PS-5 and XBOX.

You probably need to grant access to the files you can find that in the console settings :)