Make/model/year might help. Sometimes that ‘radiator support’ is replaceable separately from the rest of the frame.

Other ideas… ratchet strap to a very close very stout tree, with an additional sledgehammer whack if you can get the angle.

usually its rather weak sheet metal so you need to park the car or tie it off to a tree and then use another tree as an anchor point and pull on the metal.

don’t use rope, use a chain, it won’t stretch. a ratchet strap can work, shorten the strap to the minimum needed, but what may work better is a chain binder from harbor freight. you don’t want to pull the metal more than you need to, and a real stiff chain is a lot better than a rope.