@MarcoP Just to be sure again: it’s this prompt you’re seeing, right?
If you really think so, then you honestly should also consider that someone else entered your vault and set up authenticator app (TOTP) 2FA for your BW account, as that doesn’t happen just by itself.
I’m Sorry, that there is no better message for you now.
(If you ever had set up a login-passkey for your Bitwarden account/vault, that could at least log you in now.)
Personally, I probably would wait a few days and search everywhere three times now… In the end, if there’s nothing there, you have to start anew – and should consider deleting your BW account.