... also dont use passwords manager.
A more accurate statement would be Don't use an online or browser password manager, they all make me nervous. What could possibly go wrong?
I use and recommend KeePass, a free, open source, light-weight and easy-to-use password manager. Nothing is stored in the cloud, all passwords are in an encrypted data file in my computer. I generate a random 20 character password for every site that requires registration, that way if one site gets hacked only one password is stolen and it doesn't work anywhere else.
https://keepass.info/Using KeePass is a simple copy and paste once unlocked using a master password. The data file with the passwords is encrypted, forget your master password and all your passwords are gone forever.
There is also a KeePass Android app so I can access all my passwords from my phone by storing the portable password data file on Google Drive, since both Google Drive and the database file are encrypted using the best and most secure encryption algorithms currently known (AES-256, ChaCha20 and Twofish) I'm not concerned about theft. The Android KeePass app is bio-locked, I use my fingerprint to unlock it.