It sounds like you have just lost all your 2FA methods, i.e. TOTP & recovery code.
If you have clicked “Remember me” in the past for your desktop, maybe you can login into your web vault and just reconfigure your TOTP and retrieve your recovery code.
Remember that WebAuthn 2FA is now available even for free account, you may want to think about using your computer as a WebAuthn 2FA device. In any case, definitely write down your recovery code.