Another option is to use a password manager that supports passkeys, such as BitWarden. You can even host it locally, behind a VPN, if you don't trust the threat modelling of their hosted version.
Then, it's a case of installing BitWarden on any devices you want to use to login, protected with a strong password and 2FA.
Then, it's a case of installing BitWarden on any devices you want to use to login, protected with a strong password and 2FA.