Yep start over from the original tracks...or the unadulterated master. Assuming it is not clipped from compression.

You can't unbake a cake. So don't use the clipped file and try to fix it.

Clipping comes in my mixes from running the compression too high or pushing the mix with my Boost FX. I call them "overs" where the signal exceeded zero dB... hitting the top of the digital limits. In extreme cases, you end up with bricked files. In other cases, the overs can cause nasty sounding digital distortion. The way I mix, I have to go back to my original project and turn my compression down. It's amazing what a few dB reduction in compression can do to open the mix and let it breathe.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.