Database and session library ?

Those changes are not possible without overriding the library and making your own modifications to it.

Can I ask why you want to make those changes? Changing 'id' to 'users_id' doesn't make sense. It's not saving a user ID there, it's the session ID defined by PHP.

I realized that I can't just change it   
But I would like to have such fields in just one table:
1) Users_id - The serial number of the user.
2) Sessions_id - Individual session number of the users, but you have this field is referred to as "id"
3) Signup_ip - To track the ip of the user under which he sent the registration form.
4) Signin_ip - To track the ip of the user under which he sent the authentication form.
and a few more fields for login, password, 2FA secret code and so on.

P.S. I would be very grateful if you could help me change the names of the fields, I just love when clean and order. 

I would change this world, but God doesn't give me the source.