Try a Password Manager

Password Managers (PMs) enable you to save all your passwords as one master password on your Mac. They include:
1Password, Keeper, Blur, Stickypassword, PasswordBoss, Lastpass, Dashlane, LogmeOnce, Roboform, Zohovault, Truekey and EnPass

The last,  Enpass does not need a subscription like the others. Its use with less than 20 passwords is free.  For more passwords you need the premium version, $9.99 for one device.