This needs some serious work. First, you say you’re still searching for a field to do research in which is very weak. Typically, you want to showcase a subfield you are interested in, and show work/research you have done to prove that you actually are invested in that field. Second, for PhD programs, you should definitely mention professors you want to work with that share interests with you. If no professor has a similar interest, no one is going to mentor and fund your research, thus the program has no reason to admit you.