Doja Cat admitted to abusing cocaine in the past, insisting she's "well past that" now.

In a new TikTok she posted Monday, the rapper says she "struggled" with the drug about 8 years ago.

Doja had also posted another video earlier in the day, acknowledging that she's had problems with alcohol and weed. She said ... "I was never an alcoholic, but I definitely had problems."

During the clips, she talks about how mental health issues and social media culture can be a doozy of a combo, and addresses critics who call her "demonic."

Doja calls the internet a "breeding ground for f***ing projecting," so you shouldn't give online trolls and bullies too much of your energy.

We're glad she says she's "Okayyy" now!