I think IF could be a great tool for you, but I’d really encourage getting into more of a lifestyle change mindset. Both losing the weight sustainably and keeping it off is going to mean having goals besides just losing it as fast as possible with some crazy coffee and shrimp plus dry fasting - not that that is what you’re specifically planning.
I would start by reading the faq linked in the sidebar it’s a good explanation on what IF is, what to do, and what are the common methods.
Best of luck!
Wrestling and similar sports where you have to severely restrict calories cause people’s metabolisms to be really screwed up. No wonder you gained weight! Be patient with yourself and look into keto/ketovore/carnivore.