Part of the problem is that you are competing against thousands of other sellers.
If you type ‘amazon product background remove’ into Fiverr search, you will find 23,000 other sellers offering this very specific niche. If you search for the more generic term ‘background removal’ - you will find 43,000 other sellers.
It’s not fair to blame the system just because supply more than likely outstrips demand. You have to take some repsonsibility as well. Did you for example research how competitive this gig field is before deciding to setup an account and create your gig? Remember, the other 43,000 sellers in your niche have just as much right to receive an order as you do.
As @product_expert9 has suggested, you might find it beneficial to create other gigs detailing different photo editing skills - but you must make sure that each gig is unique. Multiple gigs offering the same service will be deleted by Fiverr. Maybe try adding another couple of gigs. For example one could be ‘I will edit your photos ready for eBay listing’.