ok super confused
simply recopied the same password to try what you said and with no changes, now its very strong
ugh computers suck
Personally I tend not to use password checkers as I'm a trusting sort (NOT) even Avast's checker.
Well the old password is definitely considered weak now you have posted an image of it
So long as you a mixture of numbers, characters (upper and lowercase) and the odd special character of a reasonable length 12 or above should be fine. Leaving out numbers greatly reduces the strength, leaving out special characters (just look how many there are, bt some sites won't allow them) also reduces the strength, reducing the computing power/time to do a brute force crack.
https://www.howtogeek.com/195430/how-to-create-a-strong-password-and-remember-it/You can also use a random password generator, most browsers can do that for you and save them securely, so no fear of forgetting them.