How do I create a random image picker DIRECTLY on the tiktok app?

There's a template I tried using that basically lets you put a list of images that will appear on your forehead and be randomly chosen but I have about 30 images I want to use and I can't seem to put them all in. I downloaded effect house on my laptop but it's insanely slow so I would like to make this effect directly on the app if possible. thanks!!