Is there a way to take multiple screenshots from MainCamera and display them as images in UI? Not one by one, but show all images at once like in a book.
screen capture method
https://docs.unity3d.com/ScriptReference/ScreenCapture.CaptureScreenshot.html
Saves as a PNG. If you want multiple screenshots taken over a span of frames maybe hold the key down, generate the screen png, locate them in your directory, and possibly use them as texture2D right away. Though import settings may have to be modified to allow for a sprite
sprite maker example