BuddyPress.org

wordpress will load page.php for every page you create so you cant really customize it..

Not necessarily.

Echoing modemlooper, you don’t need any of that code above. If you want Pages you create in WP to have different layouts, create a template file (https://codex.wordpress.org/Pages#Creating_Your_Own_Page_Templates), upload it to the root of your theme, and when you add the new page in WP, just select the template you wish to use. Arbitrary PHP, HTML, stylesheets, whatever.