A poor performance in a 2-0 loss at Crystal Palace on Saturday means the Bluebirds' last victory came in their derby-day success against rivals Swansea on November 3 and Mackay's side now sit just one point ahead of the relegation zone.
The club's owner Vincent Tan may have upset supporters with his decision to change their colours from blue to red but the Malaysian businessman has put his money forward for Mackay to strengthen his squad significantly more than fellow top flight newcomers Palace.
Cardiff, who were promoted as champions last year, invested around £30million in new talent over the summer but they have still won only three times in the league so far this campaign.
Despite a poor run of form, Mackay believes he is under just as much pressure as he always has been.
"That spotlight's been there for the last seven or eight weeks. I don't know how that changes," he said.
"It's not any different in the Premier League than it is in the Championship. Being manager of a football club these days is a precarious job.
"It's results-based. The pressure is something that goes with the line of work I'm in but I've got faith and confidence in my squad and my staff and our ability, over two-and-a-half years here and what we've done. That doesn't change. Take it on that.
"I don't get too high or too low. I have to keep that balance. We were outstanding against Stoke last Tuesday night and we are competing in the Premier League. Were we cast adrift I might have different thoughts but we are competing at this level.
"I've got a group here that I've got belief in because we've gone forward together over the last two-and-a-half years. We've showed an upward trend. That's the belief I've got."
Cardiff have scored just 11 goals in the league this season, with only Saturday's opponents Palace scoring less so far, and Mackay admitted a striker may be the priority in January - but conceded he may be priced out of any deal.
"We're constantly looking at that area," he said.
"But at this level clinical centre-forwards who are proven cost £20-£25million. Even then people are looking at them and querying them. It's not an easy position to fill.
"Stepping into the Premier League from abroad as a proven centre forward at this level is not easy.
"I'm not just talking about plucking a striker out of this country who is going to score you 20 goals in the Premier League. You look at it right now teams are looking all over the world."
Cardiff will be hopeful of picking up points before the turn of the year with three of their next four fixtures coming at the Cardiff City Stadium, with West Brom, Southampton and Sunderland all visiting south Wales.