The Magpies have lost three of their opening four Premier League games and have just a point on the board at the start of the season.
Bruce bore the brunt of supporters’ ire during their 2-2 draw at home against Southampton and the away fans were also disparaging of him at Old Trafford last weekend.
The Magpies boss conceded that it is not unnatural there are frustrations around Newcastle at the start of the campaign due to their performances at the moment.
The former defender is not surprised that he is being blamed as when a team do not get the desired results the manager has to bear the brunt of all the frustration.
“It’s not all about me. I’m here to only do what I think is best for the club and that is managing it as best I can and keep us moving along”, Bruce said in a press conference.
“That’s for other people to answer that. I will continue to do my best. I’m never going to walk away from the challenge.
“The frustration is, like any other Premier League club or any other Football League club if you don’t get results then ultimately the manager, head coach, whatever I am, bears the brunt.
“That’s what it is.
“I have to accept that results haven’t been good enough.”
Newcastle are desperate for a result ahead of hosting Leeds United at St. James’ Park on Friday night in the Premier League.