That’s no comfort at all…

We once had a rescue like Willow. He decided to live behind a bunch of boxes and only came out when he thought he was alone. Even with the other cats he was like “nah”. Until one day someone dropped a toy made of fake fur and feathers close to his hideout. 180 personality change. He completely lost it and was so focused on this stupid thing that socializing suddenly was no issue at all if he was allowed to bring his toy. Bonus points and cuddles if you engaged in his play. It was fascinating.