Even if you make an effort to delete unused files, the Files app can continue to keep them in its Trash folder. Thankfully, you can easily delete these pesky hidden deleted files in just a few taps.

To do that right click/control-click on the bin icon and choose Empty Trash. It is quite easy to locate and delete DMG files (program installers) and these are a good place to start because they ...

To remove extra photos, emails, notes, and files, you will have to delete them twice: once in the main folder for the specific app and a second time from a trash folder. 1. Open the Photos app.