Add ons (mostly abs)

I got used to doing the ab or cardio add ons that were in the descriptions in youtube, not i want to do the same on the app. What are your favorite ab workouts, or workouts that you use to supplement the program schedule, on the app?

I wish she’d categorize the workouts that arent part of programs (like she does with playlists on youtube). The search function is a bit annoying because videos from programs show up that might have a small abs portion if you search for abs.