This is an improved version of the original answer by @taras-d.

Credit goes to the original author.

Create one Directive

import { Directive, Host, Input, isDevMode, Optional } from '@angular/core';
import { RouterLink, RouterLinkWithHref } from '@angular/router';

/**
 * @ngModule RouterModule
 *
 * @description
 * 
 * A directive that prevents navigation when applied to elements with [routerLink] or [routerLinkWithHref].
 * When the `suppressNavigation` input is `true`, the directive intercepts the default behavior of the link's click event.
 * This allows the navigation to be suppressed, preventing the route change.
 * 
 * @param suppressNavigation - A boolean that determines whether the navigation should be suppressed.
 * 
 * @throws Error if used without [routerLink] or [routerLinkWithHref].
 * 
 * @publicApi
 * @see {@link RouterLink}
 * @see {@link RouterLinkWithHref}
 * 
* @remarks
 * Inspired by a [Stack Overflow answer by taras-d](https://stackoverflow.com/a/45323200/14344959).
 * Credit goes to the original author.
 */
@Directive({
  selector: '[suppressNavigation]',
  standalone: true
})
export class SuppressNavigationDirective {

  @Input() suppressNavigation: boolean = false;

  constructor(
    // Inject routerLink
    @Optional() @Host() routerLink: RouterLink,
    @Optional() @Host() routerLinkWithHref: RouterLinkWithHref
  ) {

    const link = routerLink || routerLinkWithHref;

    if (!link) {
      if (isDevMode()) {
        throw new Error(
          '[suppressNavigation] directive must be used on an element with [routerLink] or [routerLinkWithHref].'
        );
      }

      return; // Safety check
    }

    // Save original click handler
    const originalOnClick = link.onClick;

    // Override click handler
    link.onClick = (...args) => {
      if (this.suppressNavigation) {
        return routerLinkWithHref ? false : true;
      } else {
        return originalOnClick.apply(link, args);
      }
    };
  }
}

Usage:

<a routerLink="/search" [suppressNavigation]="!isLogged">Search</a>