I think it's also useful to use PGP to encrypt a seed phrase and hope it will increase the security and if it is safe. More like an experimental about using PGP for seed phrase.
https://www.passwordstore.org/This password manager for command line use PGP for it all passwords/seeds/privatekeys/ even text files are encrypted with your PGP key.
So to keep this safe i have 2 hard copies of my PGP aditional to 2 backup files