Rekordbox Export mode was designed to prepare your tracks and check if tracks are compatible with each other. And then export to use on hardware like the CDJs. Nothing more than that.
If you want to do more than that you will need to get Rekordbox Performance Mode either with a subscription or hardware that unlocks it.
Then you are able to use EQ and other features. Same for having 4 decks.
There are other DJ software that allow you to do what you want like Virtual DJ.
What the base version of Rekordbox (Export Mode) can do is pretty well documented and also described in the manual.