Once a video works, you don't move on, you squeeze it. A split test changes one small thing on a proven video so you get way more content without inventing new concepts.
Say you're 5 or 10 videos in and one of them pops. Keep the hook and the song, that's usually why it went viral. Then change one small thing and post it again.
Same clip, flipped, and the algorithm reads it as fresh.
Shuffle your build clips a little.
Tweak the hook text slightly.
Your build and end clips carry across videos. Reuse them.
You keep a winner alive without starting over.
One winner becomes ten variations, all riding the same proven hook.
Next lesson: reading your numbers to know when to build, when to scale, and when to drop.