1996 Plymouth Breeze My 1996 Plymouth Breeze Engine Wont Tu

1996 Plymouth Breeze Automatic 93000 miles

My 96 Plymouth Breeze has issues. It worked great this summer, all of a sudden its winter and my engine wont turn over. Its not the fuel pump because I just had that replaced 1 year ago. When I towed it to the mechanic, he kept it in his garage over night, and the next day, it turned over. And I guess the gas tank was frozen. He told me to put gas antifreeze next time I filled up. I did. The next day, it wouldnt turn over again. (By the way, I dont have a garage. Its sits on the cold streets) It has been dead for the past month! What happens is Ill try to start it, and my engine sounds like its gasping, itll sputter, but wont turn over, or sometimes when it does, it dies! Someone mentioned that it could be my battery. But everything else works when I turn the key. My lights. My music. But not my engine! I want to drive my Plymouth Breeze again. Whats the issue/s?