Do I need manage_page permission to manage my page using facebook php sdk?

I created a facebook app in order to use it as a login for my website.
I wish to use this app to get my page likes count, and offline post to this page.
I’m the admin of both the page and the application.
I don’t want to take any actions with my users pages. only my page.
do I still need the manage_page permission?

this is the code i’m trying using the app token that I am getting from the graph API explorer

$fb = new FacebookFacebook([
            'app_id' => '1111111111111111111111',
            'app_secret' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxx',
            'default_graph_version' => 'v3.2',
        ]);

        try {
              // Returns a `FacebookFacebookResponse` object
              $response = $fb->get(
                '/252525x25252x525252x5252525/likes',
                'apptokenapptokenapptokenapptoken'
              );
            } catch(FacebookExceptionsFacebookResponseException $e) {
              echo 'Graph returned an error: ' . $e->getMessage();
              exit;
            } catch(FacebookExceptionsFacebookSDKException $e) {
              echo 'Facebook SDK returned an error: ' . $e->getMessage();
              exit;
            }
            $graphNode = $response->getGraphNode();


                 var_dump($graphNode);  

but i’m getting this error:

Graph returned an error: (#10) To use ‘Page Public Content Access’,
your use of this endpoint must be reviewed and approved by Facebook.
To submit this ‘Page Public Content Access’ feature for review please
read our documentation on reviewable features:
https://developers.facebook.com/docs/apps/review.

When I tried to get page access token from graph api explorer using a different browser on mobile phone I get this,