Fridge is leaking refrigerant, do I have to buy a new one?

I replaced my cooling unit with "An Amish unit" can't remember the "brand" never cooled like the original. It was not hard to do following their directions provided. After a year of trying different cooling fans internal and exterior removing it again and waiting weeks for the proper thermal compound to arrive reinstalling and still no better, I replaced my whole frig. I had to remove one bracket on the bottom back and all the doors and door brackets on the front but it went out and in without removing the camper door.