LSU women's basketball star Flau'jae Johnson is breaking her silence on her 9/11 rap lyric controversy ... apologizing for her song -- and vowing to do better moving forward.

Johnson was initially hit with backlash earlier this month ... when she made a reference to the Twin Towers in her remix to Latto's hit, "Put It On Da Floor."

In the tune, Johnson sang, "In this 911 blowing smoke just like them towers." The bar was a double entendre -- it was a play on riding in a Porsche ... and the 2001 terrorist attack that killed more than 2,000 people.

Many on social media called her out over it all -- saying it was insensitive ... and in an Instagram story video late Thursday night, Johnson finally addressed the issue.

"I just want to come on here and let ya'll know by no means would I ever intentionally try to disrespect or offend anyone," said the 19-year-old, who has a legitimate budding rap career off the basketball court.

"My whole goal in music is to push positivity and spread love. So, in no way shape or form would I ever intentionally try to disrespect or offend anyone."

LSU previously commented on the song earlier this week, saying Johnson "expressed sincere remorse for any possibility of a misunderstanding." The school added that the song's music video has since been pulled from the internet.

Johnson -- who wasn't born until 2003 -- insisted she'll "learn from this moving forward."

"I just thank ya'll for ya'll continued support," she said.

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