[destus]

<input id="name" type="text" [(ngModel)]="searchText" />

<div *ngFor="let item of data | filter : searchText">
 <p>{{ item.name }} {{item.lastname}}</p>
 <p>Возраст: {{ item.age }}</p> 
</div>

import { Pipe, PipeTransform } from '@angular/core';
@Pipe({
  name: 'filter'
})
export class FilterPipe implements PipeTransform {
  transform(items: any[], searchText: string): any[] {
    if(!items) return [];
    if(!searchText) return items;
	searchText = searchText.toLowerCase();
	return items.filter( it => {
		  return it.name.toLowerCase().includes(searchText);
    });
   }
}