For maximum strength, it is recommended to make strong passwords as long as possible while still being easy for you to remember. Passwords that are longer are generally more secure than shorter passwords, because they have a greater number of possible combinations, making them more difficult to guess or crack through brute-force attacks.
Most security experts recommend using passwords that are at least 12-14 characters long, although some recommend even longer passwords, up to 20 or more characters. It’s also important to use a combination of upper and lower case letters, numbers, and symbols, and to avoid using easily guessable information such as your name, birthdate, or common words.
Using a password manager can also help you create and manage strong, unique passwords for each of your accounts, without the need to remember them all.