If your catalog page is empty, there could be a couple of reasons for it:
Your videos aren't published
Your video isn't assigned to a category
Your collections don't have any videos in the playlist
Your collection isn't assigned to a category
If your catalog page is empty, there could be a couple of reasons for it:
Your videos aren't published
Your video isn't assigned to a category
Your collections don't have any videos in the playlist
Your collection isn't assigned to a category