I cannot find my purchase movies from over the years

Hide and unhide music, movies, TV shows, audiobooks, and books - https://support.apple.com/HT208167

Are you using the same Apple Account you used to purchase them originally?

Are you using the same country setting?

If an item has been removed from the store it won't be available for redownload and you will need to get it from a backup.

I CANT FIND THE MOVIES IVE PURCHASED OVER THE YEARS

Please don't type in all capital letters. It makes your post harder to read and is considered shouting on the Internet.

Did you read Limnos' post above? Also see

Purchases - Hiding/Unhiding.