Why is my iCloud Photo Library incomplete?

Hello,

I have used iCloud Photo library in the past with this library and have had no issues. From time to time, I will delete my library from the cloud and rely on my local library because I stop buying the extra storage each month. Unfortunately, I have not been able to successfully upload my entire Photos library. I have 7.5k photos spanning over a 15 years, but only several hundred of the photos upload to iCloud. I have 50 GB of total storage, and I am only using 3 GB out of the 50 GB. My photos album is about 30 GB in size.

Things I have tried:

Repairing the Photos library.

Delete all photos from iCloud, waiting 30 days, and trying agin.

Deleting ~/Library/Containers/com.apple.cloudphotosd

Creating smart albums for Referenced or not uploaded photos (no results)

Hearting all the photos

Rotating and un-rotating all the photos

It is always the same limited photos spanning the past 15 years that upload to iCloud. I cannot force the rest of the library to sync.

I am all out of ideas, and I hope someone here knows something else to try.