can you now create sign in page like
for signup user has to pass these three things after that otp will be sent to their mail {
  "username": "Willy",
  "email": "willy001001001@gmail.com",
  "password": "password"
}

thne move user to otp screen
where user will enter otp numer six digit after verficiation return to home page

for signin user need to add email and password

and forgot password for that otp will be sent to mail

create according to best ux for user