Open the Call of Duty mobile game and enter the "My" page.
There is a row of icons at the top of My Page. Find the favorites icon and click to enter the favorites page.
On the Favorites page, find the item you want to hide, and then press and hold it.
A drop-down menu will appear after long press. Just select "Hide".
After hiding, the item will no longer appear in the favorites page.
Please note that the specific operation steps may be different due to the update or difference of the game version. If you encounter problems, it is recommended to check the game official website or contact customer service to get the most accurate information.