LastPass is the last thing you should use. It got hacked in 2015 and 2016:
http://lifehacker.com/lastpass-hacked-time-to-change-your-ma...
https://www.hackread.com/lastpass-hacked-this-time-for-good/
http://lifehacker.com/lastpass-hacked-time-to-change-your-ma...
https://www.hackread.com/lastpass-hacked-this-time-for-good/
I don't know if it's more or less secure than other password managers, but it certainly isn't the last thing you should be using.