Exporting Audacity Project

I have noticed that after I exported my file in audacity it is really quiet and all the gain changes I made to the file on the slider on the left are all gone. Does Audacity save those gain changes when exporting?

Gain adjustments on the Gain slider (in the box on the left end of the track) are applied to the track audio when you export.

So then why would the audio track after being exported sound like all levels were equalized? In audacity everything sounds right with the different gain levels but after exporting it the track just sounds equalized throughout.

Perhaps something that your media player is doing?