How to make smart lazy loading of modules in Angular after switching to a certain route or by values?

Question

Angular

How can you implement loading a module in Angular only if the user has moved to a certain route or when a certain event occurs?
And is it possible to register somehow in the route, so that the preload would go on, for example, only if there is a certain criterion, say, an admin person, or something else?

I just did something like this and I want to upgrade the routing. routes

{
    path: 'import-catalog',
    loadChildren: () => import('./pages/import-catalog/import-catalog.module').then(mod => mod.ImportCatalogModule),
    data: {preload: true, preloadAfter: 700},
    canActivate: [AuthGuard]
  }

add a link to the preloading service in app.module

imports: [
    RouterModule.forRoot(routes, {
    preloadingStrategy: CustomPreloadingStrategyService,......

and the service itself

import {Injectable} from '@angular/core';
import {PreloadingStrategy, Route} from '@angular/router';
import {Observable, of, timer} from 'rxjs';
import {map} from 'rxjs/operators';

@Injectable({
  providedIn: 'root'
})
export class CustomPreloadingStrategyService implements PreloadingStrategy {
preload(route: Route, fn: () => Observable<any>): Observable<any> {
    const loadRoute = (delay) => delay > 0 ? timer(delay).pipe(map(() => fn())) : fn();
    if (route.data && route.data.preload) {
      const delay = route.data.preloadAfter ? route.data.preloadAfter : 0;
      return loadRoute(delay);
    }
    return of(null);
  }
}

Thus, I have modules loaded after the specified milliseconds, but I would like more criteria - to load only if the type myValue=isAdmin, and also to load after certain milliseconds only if the person has switched to a certain route, otherwise do not load.

Maybe this is a "perversion", but for skill and for optimization it would be desirable.
Has anyone done this?