Temporarily, I've switched back to using my Admin account.
I’m migrating from Google Drive to Proton Drive. Initially, I faced some issues and inconveniences, and I realized that Proton Drive isn't as suitable for storing photos as Google Photos is.
So, I’ll continue using Google Photos exclusively for storing photos.
Free plan Nordlocker and Mega is for storing password backup only.
I'm still working on my backups.
Using PIM sounds like a practical choice. PIM can add an extra layer of protection without the added risk of losing or corrupting a keyfile and I don't need another password to remember.