Cardi B says she refused to attend marriage counseling with Offset prior to their separation.
Cardi B, who is parent to 6-month-old daughter Kulture Kiari with Offset, denied her family and friends influenced her decision to leave the Migos rapper in late 2018.
"No, I decided on my own," she told the magazine. "Nobody makes my decisions about my life but me."
The "Money" rapper said she also ignored Offset's suggestion of couples therapy.
Cardi B said she hasn't seen Offset and is "not really" talking to her estranged husband.
She said her future with Offset is uncertain when asked if she and the rapper will get back together.
Cardi B announced her split from Offset in an Instagram video Dec. 4.
Offset interrupted Cardi B's show Dec. 15 in Los Angeles to present the rapper with flowers and a cake onstage, but later apologized for the gesture.
Cardi B and Offset secretly married in September 2017 and welcomed Kulture in July.
The pair fueled reconciliation rumors last week after they were spotted together Friday at a nightclub in Atlanta, Ga.
"I feel like we just really are a very regular couple," Cardi B told People the same day.