what dont you understand about izotope in particular? . imo focus more on your mixing... I feel like you need to tighten up the bass and kick drum on the second drop, like make that section more defined.
when you have a good mix, then you can use izotope for master eqing, so adding some high frequancies etc... ( just small adjustments ), compression, stereo imaging just to again add or remove some width from specific bands, and then maximizer to add some loudness.
I suck at explaining things, so hopefully I helped you and didnt confuse you even more
