First you make a video platform. Then, you make a Users page. Then, you go to the Videos data, make a email column called “User Made” or something. Then, you go to Users data, then you make a column relation named “Related Videos” and then you put “User Column from Email → Relates to Videos > User Made”. Then, you go to the user page and then make a card section named “Videos this user made” or something. Then, you make the card show videos, but filter it by email (User Made is User/Email). Boom shakalaka, simple as that. Now you can make your own social media. Works with images and other stuff too.