I took a look at your public Maps profile.
You have uploaded a huge amount of photos to only two places very recently.
We should always ask ourselves if our contributions are helpful or not so helpful. And keep in mind how people use Google Maps to decide if they want to visit a place or not.
It seems that you have shared photos of pretty much each and every illustration, artifact, art piece, and signboard you came across.
If you as a Maps user wanted to use Google Maps to decide on a visit or not, would you then find it helpful to see so many photos showing random details? I would consider I a problem that such photos dilutes and makes it difficult to find selected high quality photos that captures the essence of the place.
Reading texts on small screens is not user-friendly in my opinion.
So in my personal opinion just photographing anything and everything is not helpful.
The algorithm the Google created to select the better photos and show them first seems to agree with me as none of your photos got featured.
Please review the photos that others uploaded and got featured (the first shown 10-20 images. Compare the quality of those photos with the quality of those photos you uploaded.
Better photos get priority and will get many views. I use the view counts as a simple indicator of what kind and quality photos Google wants us to upload.
I shared a series on how to take and edit photos for Google Maps that Maps will live and reward with a ton of views. See
https://www.localguidesconnect.com/t/storefront-photography-series-index/387319
Feel free to disagree and ask more questions.
I don’t think the app is failing, but doing what it was designed to do.