u/QuailPuzzleheaded910

I added this Bermuda grass to my backyard about two months ago. All the lines filled in perfectly but now I’m noticing a lot of brown spots. I thought I had been doing well the times I fertilized but maybe I did something wrong. Any tips? I water 2-3 times a week depending on the heat here in South Texas. I water in the morning with a sprinkler bought on Amazon. It may not perfectly water evenly, but I know for sure that some of these brown spots do get plenty of water