How do I empty trash bin on phone? Please help. When photos and videos ef is are deleted,  where do they go? I'd like to delete everything in my " trash", as my storage is always full.
Thank you.
Android does not have the concept of trash bin or recycle (unlike windows).

When you delete a file, it is not actually deleted but the space it occupied is marked as free and therefore can be used to store data (that's why file recovery is possible using apps).

So, your storage being always full is not because of files in trash. It can be for a bunch of other reasons like remnants of uninstalled apps, system logs, duplicates etc. I would suggest you use this app SD Maid to clean your phone. Pro version allows you to schedule cleaning.

I have no affiliation with the app and recommend it strongly