Please don't. You have something to offer and if you snuffed yourself out, that valuable spark of human spirit would be gone.
Gently, "some weeks" (not sure what this means exactly) is not a very long to be looking for work. Keep your chin up and keep applying. Get a resume review — I'm sure someone here would be happy to take a look and see what you can improve. Get a non-professional job in the meantime just to keep some money flowing in. And reach out to your family and friends for support. There is no shame in leaning on people; we all need help to get through the hard times.