identity user login failed

Question

I have really big problem. I'm tried to login my AspCore project. But i have always this issue.I was on this a month

this is find my user with all properties anythink is null

AppUser user = _userManager.Users.Where(a=>a.UserName==Input.Username).FirstOrDefault();  
          

but when i try signin with this

 var result = await _signInManager.PasswordSignInAsync(user, Input.Password, Input.RememberMe, lockoutOnFailure: false);  
always i taking this fail  

Fail image:

Guyz pls help me. Anyone wants to my project i can upload githup too