I created a simple page in a controller class: 

      public function taxonomyPage($term) {
        return [
          '#type' => 'markup',
          '#markup' => $this->t('<p>Need to render layout builder here.</p>'),
        ];
      }
Routing:

    knmt_taxonomy.detail:
      path: '/tags/{term}'
      defaults:
        _controller: '\Drupal\knmt_taxonomy\Controller\TaxonomyController::taxonomyPage'
      requirements:
        _permission: 'edit own content'

For node pages i already use layout builder to render blocks, this is working fine.

I also want to use layout builder within this page. I have zero display options for now, is there a way i can enable layout builder specific for this page so i can render blocks this way?