Hi TaylorJJM92,
welcome to this Apple (user-to-user) Community!
Re: "Videos not loading : Since the last 2 updates, .... I keep getting “unable to load video” "
There are various possible reasons you may get this error-message.
First: Have you tried restarting your iPhone ?
(Often restores order if something is not working as expected.
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Re: "is there anyway I can get these to load?"
Keeping iPhone updated to the newest version can sometime side-step issues.
Professional wedding videos are likely to be of very high quality, often requiring more memory / storage space and play-back resources than usual.
Else:
If videos were captured on iPhone(s), the wedding videos are already in a format iPhone can handle, yet may be longer than the usual video clips thus requiring storage / play-back resources.
May I ask a few questions that may help troubleshoot ?
(1) whether or not your iPhone has the newest iOS 26 update installed:
you can check on iPhone in Settings > General > Software updates.
(About iOS 26 Updates - Apple Support says iOS 26.2.1 is the latest and contains bug-fixes)
(2) whether or not your iPhone has plenty of free storage space available (at least 8Gb pref. more):
You can check on your iPhone in Settings > General > Storage
More info. if needed: How to check the storage on your iPhone and iPad - Apple Support
(3) whether or not you are using iCloud to sync / store photos and videos.
All the best :-)