I've only used BitWarden, so this may not be a universal answer, but... you do access your password vault with a single password. Make sure it's complex but memorable. "WayneCommaAdam42069LOL!" for instance. Nobody's going to brute force that, but you'll also be able to remember it. Then once you're past that, you'll have a list of each login you save (each entry can include website, username, password, personal notes, etc). You can randomly generate a password, so that (for example) your lemmy.world password generates as "L812#zksKa01S@ks" and you can just copy/paste from your vault into the login page without having to remember that string of characters.
As for how BitWarden secures your passwords, since they're available to view after you get past the initial login... I've got no idea but a lot of people seem to vouch for it, so if BitWarden (or the other big trusted equivalents) gets compromised, we're all in a lot of trouble.
And of course, each site you log into will still have its own password recovery, 2FA, etc options. So even if something happens to BitWarden and you can't log into your bank account, you can still call up your bank and get your password reset.
I've only used BitWarden, so this may not be a universal answer, but... you do access your password vault with a single password. Make sure it's complex but memorable. "WayneCommaAdam42069LOL!" for instance. Nobody's going to brute force that, but you'll also be able to remember it. Then once you're past that, you'll have a list of each login you save (each entry can include website, username, password, personal notes, etc). You can randomly generate a password, so that (for example) your lemmy.world password generates as "L812#zksKa01S@ks" and you can just copy/paste from your vault into the login page without having to remember that string of characters.
As for how BitWarden secures your passwords, since they're available to view after you get past the initial login... I've got no idea but a lot of people seem to vouch for it, so if BitWarden (or the other big trusted equivalents) gets compromised, we're all in a lot of trouble.
And of course, each site you log into will still have its own password recovery, 2FA, etc options. So even if something happens to BitWarden and you can't log into your bank account, you can still call up your bank and get your password reset.