The Reds forward, who had a big hand in the game's only goal of the game – striking the post before Inigo Martinez sliced a clearance into his own net – said the result had given the squad a big confidence boost following last Saturday's draw with Southampton.
"I thought we played some good football and we should have won the game 3-0, 4-0 or 5-0," he said. "It was an early goal and we could have gone into half-time 2-0 up but we didn’t.
"We started the first 10 minutes of the second half a bit slower, and towards the end of the game we really went at them and should have scored again.
"But we’re happy we got the win – that’s the most important thing after the game on Saturday. We fully deserved the win and thankfully we came away with the three points.”
Rooney also had praise for his side's defence, which lined up unchanged from saturday's 1-1 draw.
"Our defending was particularly good," he said. "Obviously a clean sheet is really pleasing and we created a lot of chances."
The England international, who turns 28 on Thursday 24 October, also underlined how pleased he is to be playing at the club under David Moyes.
He said he's happy on and off the pitch and is keen to work hard to get results under the new management.
"With the new coaching staff coming in, it’s a new lease of life, and I’m really