Okta Authentication To Know User Logged In The Website First Time

Question

I'm using Okta Authentication in our angular 14 application, This is a SPA. How can I know that The currently authenticated user logged in to the application the first time so that we can fetch the details of that user's last login date & time etc.?

import { OktaAuthService } from '@okta/okta-angular';
constructor(public oktaAuth: OktaAuthService....

function login(){
this.oktaAuth.getUser()  //** using this not able to get isNewuser or Not

}