If your track has white noise in it the issue is usually a mix issue.

During the mastering process different elements of the track get compressed, which means they oftentimes will have their volume increased. This can make mix issues more present, such as feedback from guitar cables, or background noise from microphones during the recording process.

If you have white noise in your track I'd recommend investigating the individual audio files themselves, and see if you can hone in on the one causing the noise. You can then use an EQ to try and remove the noisey frequency.