I'm sorry if I sound rude but you'll have to step up your game. Competition is high and low quality images won't make you money.
If it helps, when I joined Shutterstock for the first time (a year and few months ago) I stopped uploading for about 3 months because I realized I simply didn't know enough about photography. I other words, I was a bad photographer. I learned as much as I could from this forum, where you can find valuable threads, and researching on the Internet. After a few months I came back and started uploading again, with little success at first. Now I'm selling around 40 pictures per month and I've made 138$, which is a small amount for more than a year. You'll have to upload GOOD pictures and A LOT of them.
You should know too that there are some styles of photography that sell a lot more than others. You'll have to be a very good nature or wildlife photographer and upload a looot of images to make money from them. Lifestyle pictures, or products, or people working sell a lot more. Keep in mind that this is a market and it has demands. Simply shooting trees or grass won't work.
Hope it helped.