The X Factor judge's latest track 'Live It Up' reached number 11 on Sunday's (September 16) chart, following the chart-topping success of 'Young' earlier in the year.
"I said I don't know if it will even get into the top ten," she reminded BBC's Newsbeat.
"With that single it was strategic to sell the album. I'm not trying to get a number one with this one."
She added: "I know it's urban. I know that it's probably not going to chart high. I want to show a different side to the album. For me it's a bigger picture."
Contostavlos recently told Digital Spy that her third solo single will be a "Christmassy" ballad that will "stand the test of time".
The star's debut solo album The Female Boss will be released in the UK on November 26.
Watch the music video for Tulisa's 'Live It Up' below: