Yubikeys can store 2fa codes. You just install their app from F-Droid and show the NFC key to get the codes.
replyNow the codes are with you and not in your phone or in the cloud.
One flaw in that is that Google Voice or other VOIP provider numbers are often rejected for 2FA or account validation.
replySometimes, yes, but not that often IME. Maybe 10-15% of the time.
replyI recommend you get off Authy - they don't have a browser extension or a desktop client, and surprise they don't have a way to export your codes either. I had to send them a GDPR data request, and then Claude decrypted the csv file they sent. I now use Ente and it's so nice having 2fa inside a browser extension. I can also export the secrets at will.
replyKeepass is also a good alternative to Authy, caveat being you need some way to sync the db file between devices.
replyI personally use Keepass for 2FA, Bitwarden for passwords. It's worked great for me so far, and I expect to stay with this setup for the foreseeable future.