The Portuguese was outspoken in his thoughts on his team after they lost 3-1 at home to Brighton.
Amorim admitted his team were second best and deserved to lose, even labeling them one of the worst United teams in history.
He stated: "In 10 Premier League games, we've won two. I know that. If it's (like) this for a fan of Manchester United, imagine what it's like for me.
“You are getting a new coach that is losing more than the last coach, I have full knowledge of that. Like I said, I'm not going to change, no matter what, and I know we can succeed.
“But we need to survive this moment because I’m not naive and I know that we need to survive now. We are being the worst team, maybe, in the history of Manchester United, and I know that you want headlines but I'm saying that because we have to acknowledge that and change that."