What can be better alternative? IMO using something like 1Password/Lastpass is less secure because it then only takes someone to get my master password to get all my other passwords.
Your master password shouldn't really be something that's going to be in either a dictionary, or brute forcible. Nobody is going to "get" it unless you make it insecure. If you're using their sync services, however (especially LastPass), you're more vulnerable to phishing attacks, and the vault can potentially be stolen and crack attempts run offline. However, both services use a heavy level of encryption that requires the passphrase to unlock, so as long as that's not dictionary based or brute forcible, you're totally fine.
They would also need access to the machine which you have your vault stored on which would be your laptop and your phone and nothing else.