Facebook OSINT is something which is difficult to keep up with. Facebook has continuously updated itself over the years. As of now Facebook and Fb profiles/accounts are super-restrictive (i.e. unless and until the user wants his/her account to be public in any case, only in that very case the account will be public and accessible by us).
Everyone tries their first hands-on on Mark Zuckerberg's account, and not directly dive into real people account (Not that Mark Zuckerberg is not a real people but also he is highly popular).
So you can view media/pictures of Mark. But as Fb is quite restrictive, the alternate method in-order to view Mark's photos search "photos of mark zuckerberg" and you will see the results - tagged pictures.
Right Click on anywhere in profile and select "View Page Source" , then press "ctrl+F". By doing this a small search bar appears. Search "userID" . By getting the ID you can use it in Sowdust Github and/or IntelligenceX Facebook Search