When the PLEX library reaches a certain number, in addition to search to find pieces, but also through the plex app filter function to find, and support the filter is very many, dozens of it, I take 3 examples first.

The filter is positioned at the top first button under the plex library view.

For example, if you're looking for a Chinese film, you can do this:

If you want to choose an HBO episode like this:

For example, if you want to filter movies by rating, you can do this:

Take iOS as a case in point, and filters are supported on both the TV side and the phone side of the actual plex app. However, third parties such as infuse do not support filters because they have their own filters.