Russian Blue kittens & cats in Marshfield, Wisconsin

This is Bandit, he is almost 2 years old and is neutered, microchipped, and up to date on his vaccines. I have had him for a little over a year now and have had ongoing issues with his litter box use, behavior, and getting into/breaking things. His previous owners had told me he was scared of males because of how their other cat behaved. He honestly acts afraid of both of us if we go up to him, but if he comes up to us he is okay. I’m not sure if there was something that occurred that we do not know about. He also refuses to play with my other male cat who is almost the exact same age as him and they do not get along as well as they did when we first got him. I am not sure if they do not get along because they are both males but they are both neutered. As much as I do not want to re-home him, I unfortunately think he may be happier as a solo animal where he can receive all the attention.