In 2017, I entered a Master's program after being rejected by 12 PhD programs. Yesterday I was accepted by my top two choices. Failure is fundamental in academia, and it is a grind. I learned a lot from my rejections, and I still feel like I have a chip on my shoulder. So any advise I would give is to learn the most you can out of the rejections. I wanted to become a sociologist even more after being rejected. Decide who you want to be and grind relentlessly until it happens.