I put them all on my refigerator.

I use keepassxc in a dedicated vm with no internet access. I have ~1000 entries between my wife, my kid, and me. Don't see how it's manageable any other way.

I second the recommendation of keepassxc. Really great tool. Open source and you run it on your own computer.

I use a locally hosted vaultwarden. Passwords only sync on the local network.

KeePass user since... Hmmm... 2007? 2008? Something on these lines! xD I just use a really good password and keep my file on my (encrypted) hardrive on my desktop/notebook/cellphone with some (encrypted) backups. Then... I sort of make fun with everyone from my family that doesn't use it! 😂

3rd party risk

The more valuable function of a password manager, is the random password generator. Password created by humans are often insufficiently random, and vulnerable to automated attacks. Particularly if there's a data leak, because then there's no rate limit on failed attempts.