Aston Villa are yet to win a match in the Championship so far this season.
Villa have already been active this summer, and have invested heavily in their squad in recent times.
However, the claret and blues have not started this campaign in auspicious style.
Villa could only draw on opening day with Hull City, and were battered 3-0 by Cardiff City at the weekend.
The heavy defeat was highly disappointing for Villa, who began the campaign as one of the favourites for promotion.
But when asked whether he would look to make more signings, Bruce insisted that adding more players was not the answer.
He said: “I haven’t got millions to spend. The club has spent millions in the past. That is not the answer when you get beat.
“We have to change the culture. We get beat and it doesn’t mean enough. We have to change that culture and turn it around.
“There’s glimpses but there’s still a long way to go, especially away from home.”
Bruce is now under serious pressure to find the winning formula at Villa sooner rather than later.
The Midlands side were disappointing last term, and despite bringing in a lot of experience this summer, they are yet to prove they have improved.
Villa are next in action tomorrow evening, when they take on Reading at the Madejski Stadium.
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