Hi,
this has been an issue that's been reported and requested over and over and over again. And clearly Olivia, as so many MS Support Reps just copy/pasted a standard answer without either understanding or caring what the problem is. Sometimes I do think these MS forums are just utterly useless and many people just post random answers hoping for the best.
Again to reiterate. The problem is as follows:
ALL Photos are being shown, no matter whether that's Android, Windows or anywhere else. As the original poster, I have the same problem. Not only are ALL photos being shown in my photo gallery, but also in the "memory" bit, where it shows what happened the same day the year(s) before. To give you an example:
In my general (!) OneDrive folders I have, images, graphics and art for my website projects, my private hobbies, my computer games (i.e. Screenshots), but I also do have personal photos. For some reason, OneDrive decides to skim through ALL my image files, whether relevant or not and show these either in the Photo app or in my memory section.
So when OneDrive shows me - for example - photos from the years before, it shows me icons and image files from my projects I saved last year, it also shows me a screenshot of a game and it shows family pictures.
I thought I am being intelligent by leaving ACTUAL photos in the "Pictures" folder and moving EVERYTHING ELSE into a different folder, i.e. arts and graphics into a dedicated folder OUTSIDE the "Pictures" folder which I assumed is going to be indexed for this. All my other documents like website projects, art projects, etc.pp are all in different folders, definitely not in the "pictures" folder. Yet OneDrive still decides to show me that on this day 2 years ago, I saved an empty pixel GIF which I needed for a website, as well as a black square. Right next to the photos of my babies birth.
It is beyond me, why Microsoft decides that certain folders have to be skimmed for images and why users don't get a say in this. Either give users the option and integrate a button that says "include this folder in photo app/memory feature" or at least give the general option to ONLY skim through photos in the "pictures" folder unless being told otherwise.
So dear Olivia, the problem is not that we don't know how to use OneDrive. The problem is that there is no feature despite people asking for it in numerous posts and support requests here and in many other forums and websites.
I do have an Android phone and I don't use the camera upload function at all (this also being one of the reasons!!!) but the problem - as I mentioned before - exists on all platforms. The "camera upload" function has nothing to do with it.