On my PC I don't have a manager set up. The browser has the passkey saved, if I accidentally set one up by mistake, but it's not accessible on my other devices.

On my PC I don't have a manager set up. The browser has the passkey saved, if I accidentally set one up by mistake, but it's not accessible on my other devices. How do I log in to my account if I don't have the specific device the account exists on?