Obsidian stored in Veracrypt. Bonus if you get security keys for veracrypt, either as piv cards or using long passwords only on the key.
Standard notes doesn’t require an email. Just make a private username and password.
Protonmail and mailbox.org support pgp. Protonmail pgp is quantum resistant. Grab a public key and write emails to a free account.
Honestly though, get a fire resistant bag or safe and a notebook. No bit rot. No hacking.