Audio for video is unsynchronized and I have no clue how to fix it

I'm trying to make a post for my instagram, I have all the clips and the different speeds of the videos matched up how I want it, but when I export the video, the audio is out of sync with the video and I'm not too sure how to fix it, any solutions?

(One part of the video is 2 split sections of the same video, and all 3 clips have different speeds, if it helps any)