It looks like you’ve got a nice clump of cattails. Now then, what’s the back story? Did you build it, buy it, find it? And why the belief you can’t do it? If you want to make the pond a success, we can help you. If you want to remove it, that one is a liner, if there are others in the forum around you, they might be interested in any of the pond equipment and plants and such. With a liner, you could drain the pond, remove all stones, plants, liner, etc, and have it filled in. Voila, a nice area for a garden! But, if you want to make a successful pond, you can. My pond last year ( and it will be again this year, just a different part of the yard,) was an above ground pop up Intex pool. Undersized pump, I ended up with pea soup algae water, then I had a massive die off, lost over half my fish, ( I later realized it was due to over drift from crop spray, when it killed most of my cats) but I felt like a failure too. I have two days a week to play catch up on house work, yard work, pond and aquariums, and rest up for another chaotic work week. I didn’t know if I could do it, but by grace, I’m going to try again!