use ngfor and ngif together angular 8 code example
Example: *ngIf and *ngFor in same container
<ng-container *ngIf="show">
<div *ngFor="let thing of stuff">
{{log(thing)}}
<span>{{thing.name}}</span>
</div>
</ng-container>
<ng-container *ngIf="show">
<div *ngFor="let thing of stuff">
{{log(thing)}}
<span>{{thing.name}}</span>
</div>
</ng-container>