Really Thanks for Help

I just add the code. Seem it still go to Gallery List page!!

Is that possible to hide/disable the delete button for user?? dont let user delete.

I thinks the site will be no more need change to be use for Public
1. Create Gallery when registration (OK)
2. myGallery go to Media List
3. User not allow to delete
4. User cannot Create Gallery

Thanks for you support
Kerry

I mean this

http://cover.y-popstyle.com/wp-content/uploads/2019/03/medialist2.png

I try myself to follow your example and have some progress!
1. I can not let user create delete edit Gallery
2. I can set the Title of the Gallery as the nickname
3. can Auto create after pressing the Profile

What I dont know how to do are:
1. Auto Create during registration
2. remove the “Please Select Gallery” in upload shortcode, because each user only have one gallery so dont need select

function mpp_custom_auto_create_gallery() {
 
 if ( ! bp_is_my_profile() ) {
  return ;
 }
 
 //make sure that user gallery functions are available
 if ( ! function_exists( 'mpp_create_gallery' ) ) {
  return;
 }
 
 
 $user_id = get_current_user_id();
 $username = $user_id->user_login; 
 $nickname = get_user_meta($user_id, 'nickname', true);
  
 //does this user has predefined gallery?
 //we use this check to avoid same type of gallery again and again for the user
 if ( ! get_user_meta(  $user_id, '_mpp_predefined_gallery_photo_1', true ) ) {
  //No, then we need to create it.
  

  //repeat it as you want
  $gallery_id = mpp_create_gallery( array(
   'creator_id'  => $user_id,
   'title'    => $nickname,
   'description'  => '', //add description if any
   'status'   => mpp_get_default_status(),//can use any of the status e.g. 'public' , 'private', 'loggedin', 'friends' etc
   'component'   => 'members',//for user
   'component_id'  => $user_id,//no need to change
   'type'    => 'photo', //can change to "audio", "video", "doc"
   ) );
 
  //let us keep the id in usermeta to avoid creating it again, right?
  if ( !  is_wp_error( $gallery_id ) ) {
   update_user_meta( $user_id, '_mpp_predefined_gallery_photo_1', $gallery_id ); //you can change the key to anything

  }
  
 }//end of repeatable block
 
 //go ahead, do it for other types too
 
 
 
}

add_action( 'mpp_actions', 'mpp_custom_auto_create_gallery' );

https://buddydev.com/support/forums/topic/mediapress-predefined-user-galleries/

I have seen this post and can disable user to create edit and delete gallery but don’t know how to auto create gallery when registration

And use the Name as the gallery name

Kerry