Sign up/login issues with security

i have found out how to sign people up and where to list the information in the database but my problem is securing a passcode. a few problems i have ran into is that when i sign up everything is stored but a password so when i login i only have to type in a username or email that was created and i am logged in… is this only for me because im creating this and will work once app is published or is there some way for users to have their password linked with their email/username.
ANY help would be amazing right now. the only problem im running into is using a password to login. i want to make it where people have their own profiles so its really needed. thank you

if you share your editor link i will have a quick look.