How I can validate password with multiple conditions, Here is my HTML and TS file is,
HTML 

<div class="container">
    <form [formGroup]="form" (ngSubmit)="submit()">
           
        <div class="form-group">
            <label for="password">Password</label>
            <input 
                formControlName="password"
                id="password" 
                type="password" 
                class="form-control">
            <div *ngIf="f.password.touched && f.password.invalid" class="alert alert-danger">
                <div *ngIf="f.password.errors.required">Password is required.</div>
            </div>
        </div>
  
        <div class="form-group">
            <label for="confirm_password">Confirm Password</label>
            <input 
                formControlName="confirm_password"
                id="confirm_password" 
                type="password" 
                class="form-control">
            <div *ngIf="f.confirm_password.touched && f.confirm_password.invalid" class="alert alert-danger">
                <div *ngIf="f.confirm_password.errors.required">Password is required.</div>
                <div *ngIf="f.confirm_password.errors.confirmedValidator">Password and Confirm Password must be match.</div>
            </div>
        </div>
        
        <button class="btn btn-primary" type="submit" [disabled]="!form.valid">Submit</button>
    </form>
</div>

TS File

import { Component } from '@angular/core';
import { FormBuilder, FormGroup, FormControl, Validators} from '@angular/forms';
    
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  form: FormGroup = new FormGroup({});
  
  constructor(private fb: FormBuilder) {
  
    this.form = fb.group({
      password: ['', [Validators.required]],
      confirm_password: ['', [Validators.required]]
    })
  }
    
  get f(){
    return this.form.controls;
  }
   
  submit(){
    console.log(this.form.value);
  }
   
}