Firebase auth, problems with google sign up overriding other emails - firebase-authentication

Question

When signing up a user with email and password, or any other sign in method, with an email example#gmail.com. And then when signing in with google , with example#gmail.com, the google sign in overrides that previous email that was already used.
Here are the functions I'm using:
For email and password:
const handleSignup = () => {
console.log('signup')
clearErrors()
firebase.auth().createUserWithEmailAndPassword(email, password).catch(err => {
switch(err.code) {
case "auth/email-already-in-use":
setEmailError(err.message)
break
case "auth/invalid-email":
setEmailError(err.message)
break
case "auth/weak-password":
setPasswordError(err.message)
break
default:
setEmailError('Invalid')
}
})
firebase.auth().onAuthStateChanged(user => {
if(user) {
user.updateProfile({
displayName: name,
})
db.collection('users').doc(user.uid).set({
created: new Date(),
msgids,
uid: firebase.auth().currentUser.uid,
online: true,
userinfo: {
name,
cover,
age: '',
phone: '',
city: '',
country: '',
website: 'https://',
job: '',
email,
},
customization: {
color: '#10325c',
themecolor: '#0f6ce6',
darkmode: false,
widemode: false,
}
})
db.collection('notifications').doc(user.uid).set({
notifications: []
})
}//if (user)
else {
setUser('')
}
})
}
For Google:
function loginwithGoogle(){
var provider = new firebase.auth.GoogleAuthProvider();
provider.addScope('email');
firebase.auth()
.signInWithPopup(provider)
.then((result) => {
if(result.additionalUserInfo.isNewUser){
/** #type {firebase.auth.OAuthCredential} */
var credential = result.credential;
// This gives you a Google Access Token. You can use it to access the Google API.
var token = credential.accessToken;
// The signed-in user info.
var user = result.user;
// ...
db.collection('users').doc(user.uid).set({
created: new Date(),
msgids,
uid: user.uid,
online: true,
userinfo: {
name: user.displayName,
cover: user.photoURL,
age: '',
phone: user.phoneNumber,
city:'',
country: '',
website: 'https://',
job: '',
email:user.email
},
customization: {
color: '#10325c',
themecolor: '#0f6ce6',
darkmode: false,
widemode: false,
}
})
db.collection('notifications').doc(user.uid).set({
notifications: []
})
}
}).catch((error) => {
// Handle Errors here.
var errorCode = error.code;
var errorMessage = error.message;
// The email of the user's account used.
var email = error.email;
// The firebase.auth.AuthCredential type that was used.
var credential = error.credential;
// ...
setEmailError(error.message)
setTimeout(()=>{
setEmailError('')
},3000)
});
}
Any idea why google sign up is overriding other email?