Is password manager a safety option?

Good password means create them difficult, don’t use them again and change them often. But with almost every site and app wanting users to sign up for an account, memorizing difficult passwords becomes a superhuman task. Password managers make our job easy by not only remembering but also produce the random strings of lowercase and uppercase letters, symbols and numbers necessary to protect our online accounts from scammers and hackers. But Is the password manager a safety option?