I think my post here could give you a good idea about strong or bad passwords.
Understanding how password works a lot of people know how important that strong password is important for your account security but mostly a lot of experts still suggest changing your password every month for safety measures.
I was worried about this issue back in the day because if you just think about it websites could just use your password and login into your accounts if you use the same password on the other websites. And I think I've done the mistake in my early days because we know that it's easy to remember your password when you only have 1 password or 2 passwords

. As an IT I understand that passwords in a website are actually encrypted so even the programmers or the websites should not be able to see your password at least.
It's better to have a strong password or another layer of protection when it comes to your Gmail because every website is just connected to your email, having an access to your email account meaning having access to all of your accounts on different websites most of the time.
But it's a different story when it comes to phishing websites or scammed websites because their goal is to get your information so I don't think they have encryption or anything.
Also, the construction of your password is important:
https://i.imgur.com/qAEfEi3.jpgSource:
https://www.facebook.com/photo.php?fbid=10164381734490372&set=gm.2824409767782130&type=3&theaterhttps://howsecureismypassword.net/You could also check how should your password here:
https://howsecureismypassword.net/after what I said maybe you don't trust the website anymore, putting some password

.