How do I get the correct id from flask-sqlalchemy when autoincrement id from def __init__() in flask-sqlalchemy?

How do I get the correct id from flask-sqlalchemy when autoincrement id from def init() in flask-sqlalchemy ?Also if I want to db.add(id) id how do I do that?

class User(UserMixin, db.Model):
      
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True, nullable=False)
    hashed_password = db.Column(db.String(128), nullable=False)
    email = db.Column(db.String(120), unique=True, nullable=False)
    
    confirmation_email = db.Column(db.Boolean, default=False, nullable=False) 
    reset_email_password = db.Column(db.Boolean, default=False, nullable=False)
    



def __init__ (self , id: int, username: str,  email: str, plaintext_password: str, confirmation_email=False, reset_email_password=False): 
    self.id = id
    self.username = username
    self.email = email
    # Hashing the password ( bytes, salt)
    plaintext_password = 'pojkp[kjpj[pj'
    self.hashed_password = bcrypt.hashpw(plaintext_password.encode('utf-8'), bcrypt.gensalt())
    self.confirmation_email = confirmation_email 
    self.reset_email_password = reset_email_password

Thanks for the help