Stream -Library Filter Request

Would be nice to be able to filter by: subcategory (already watched) then/ category: species, season, technique…ect
.
sorry f this is an option and I just can’t find it but please tell me how!

Thanks

or be able to make and save our own favourites? While searching there are constant videos I find I want to watch while hunting for something specific, but have no way of saving them.

I have been hoping for improved library search functionality for a while now and have a whole laundry list of what I’d like to see. Maybe when the app is done??