providers: [
        ...
        {provide: 'googleTagManagerId',  useValue: YOUR_GTM_ID}
    ],

import { GoogleTagManagerModule } from 'angular-google-tag-manager';

imports: [
    ...
    GoogleTagManagerModule.forRoot({
      id: YOUR_GTM_ID,
    })
]

import { GoogleTagManagerConfiguration } from 'angular-google-tag-manager-config.service';

imports: [
    ...
    GoogleTagManagerModule.forRoot()
]

providers: [
    {
      ...
      provide: APP_INITIALIZER,
      useFactory: configInitializer,
      deps: [
        HttpBackend,
        GoogleTagManagerConfiguration,
      ],
      multi: true,
    },
  ],

googleTagManagerConfiguration.set(googleTagManagerConfiguration);

constructor(
        ...
        private gtmService: GoogleTagManagerService,
    ) { }

 this.router.events.forEach(item => {
            if (item instanceof NavigationEnd) {
                const gtmTag = {
                    event: 'page',
                    pageName: item.url
                };

                this.gtmService.pushTag(gtmTag);
            }
        });

    this.gtmService.addGtmToDom();

npm i --save  angular-google-tag-manager

    providers: [
        ...
        {provide: 'googleTagManagerId',  useValue: YOUR_GTM_ID},
        {provide: 'googleTagManagerAuth',  useValue: YOUR_GTM_AUTH},
        {provide: 'googleTagManagerPreview',  useValue: YOUR_GTM_ENV},
        {provide: 'googleTagManagerResourcePath',  useValue: YOUR_GTM_RESOURCE_PATH},
        {provide: 'googleTagManagerCSPNonce',  useValue: YOUR_CSP_NONCE}
    ],

import { GoogleTagManagerModule } from 'angular-google-tag-manager';

imports: [
    ...
    GoogleTagManagerModule.forRoot({
      id: YOUR_GTM_ID,
      gtm_auth: YOUR_GTM_AUTH,
      gtm_preview: YOUR_GTM_ENV
    })
]