user-page.component.html

<body>
    <h2>Welcome to User Page</h2>
    <div class="containerUser">
        <div class="items" *ngIf="user$ | async as u; else loading">
            <h2 class="sellerUsername">username:<b>{{u['username']}}</b></h2>
        </div>
        <ng-template #loading>Loading...</ng-template>
        <div class="items"><app-star-rating userId="{{userId}}"></app-star-rating></div>
    </div>
    <app-user-gallery userId="{{userId}}"></app-user-gallery>
</body>