there are lots of cheap domain registrar options but if you’re looking for a cheap .com I always go for cloudflare, they also offer .org for pretty cheap and many other options as well. The domains other than the common ones are pretty decently priced as well. I migrated all my domains there last year and it’s really simple, integrates with their DNS really well and payment is pretty streamlined.
Said in the reply to the other comment here, but I don’t really self host for security/privacy sake. And in addition to that comment I’d also like to say that I do use a YubiKey when possible for MFA. I’m not a security nut enough to care about TOTP (which kinda sucks anyway) all too much but for important things I do use physical MFA.
Fair, although I’ve said in a comment on this account somewhere else, I self host more for convenience sake than anything. I just like having my own password manager, sure it’s not as secure to use it for MFA but it’s better than giving my passwords to Google, LastPass, etc. and then using eg Google Authenticator. Self hosting is more a corporate distrust thing than a privacy thing for me
I self host Bitwarden (Vaultwarden) so I just use the built-in TOTP authenticator in the Bitwarden app. It’s nice to have it all in one place + having auto copy and paste when I log in. And because I self host, it’s all backed up securely and with (as far as I know) no real backdoors.
ETA: just realized what community this is in. people that replied to me I’m sorry lmao, I’m not a nut about this kinda stuff and I’m by no means recommending this just like using it this way for convenience factor and to keep the likes of google out of my password.