Make visible only the user's data in a viewer grid/list

I have a project that some users need to send their data (picture, text, etc.) but i want to make the data viewer show only the stuff that the user sent.

For example:
2 Users sent pictures, but the data viewer is showing the 2 different pictures, I want the user to be able to see and access only the data HE sent.

Is there any way that i can do that?
(the image i put here is the app, the blurred is the one i sent and the gray one is the one the other user sent


)