"Playing for Manchester United comes with a lot of pressure," Lingard was quoted as saying by the club's website (www.manutd.com).
"If you're out of a competition, you're going to get critics, they're going to start saying stuff. We've got to rise above that as a team, move on and concentrate on the next game."
United sit fourth in the Premier League table behind Manchester City on goal difference and visit 17th-placed Bournemouth on Saturday.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
Van Gaal's men have struggled for fluency all season, scoring 20 goals in 15 Premier League matches -- the joint lowest in the top seven along with Crystal Palace -- and have struggled to finish off chances.
Midfielder Juan Mata is United's top scorer in the league with four goals, followed by youngster Anthony Marital on three. Captain Wayne Rooney and winger Memphis Depay are tied on two league goals apiece.
"We just need to stay positive. We're creating a lot of chances, we're just lacking that end product. But we're working on it and hopefully that will come in the next game," Lingard said.
"Obviously we're disappointed as a whole group and we've got to move on."
(Reporting by Simon Jennings in Bengaluru; editing by Sudipto Ganguly)
