The Red Devils have made something of a stuttering start to the new campaign and their 1-0 loss to Chelsea last weekend left them second in the table and eight points behind runaway leaders Manchester City.
Manchester United are currently aiming to bounce back to winning ways in the top flight when they take on Newcastle United at Old Trafford on Saturday afternoon.
Lukaku has already had his fair share of criticism this season, despite the Belgian striker having scored seven goals in his first 11 games in the Premier League for the Red Devils.
And the Belgian forward has insisted that he is purely focused on helping Manchester United bounce back in the coming weeks and months and is paying no attention to the naysayers.
Speaking to Sky Sports News, Lukaku said: “I think when I signed everybody was asking questions and I think starting so well surprised a few people.
“We are still in the early stages of the season and nothing is over yet. We can do much better than we are doing now.”
Manchester United are aiming to win the Premier League title for the first time this season since Sir Alex Ferguson’s final triumph in charge back in 2013.
The Red Devils finished sixth in the Premier League last season but also won the Europa League and League Cup in Jose Mourinho’s first campaign at the club.
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