United are struggling with injuries and both Anders Lindegaard and David de Gea are out of action.
Amos featured for United in Tuesday night’s Premier League win over Stoke.
“I have been waiting a long time for an opportunity this season and thankfully it has come,” the 21-year-old told Manchester Evening News.
“I feel I am ready to play at this level and it has been kind of frustrating that these chances don’t come around.
“But you have to be ready when something like that happens and you are thrown straight in and I like to think I made the most of it.”
“In a sense I wanted more to do but then there is a temptation to go and chase things,” he continued.
“You see a lot of keepers with not much experience who try and make an impact, which there is no need to do. That is what I had in my head and I think I got that right.
“Obviously I wanted to be positive with any decisions.”
“All I can do is keep a clean sheet and play the best I can when I get a chance,” he added. “You have to do the best you can.
“It is the manager who makes the decisions and all I can do is put pressure on the other two any chance I get.”
