The real problem is that you pay for what you get.
With bad and often inexpensive plugins you'll never reach the quality and the beautifull sound of commercial cds.
When after listening your preferite cd at home and put on yours ..ohh noo!!
So if you want to be more happy with mastering is necessary to use serious plug in.
Plug as ozone and t racks can help you ,but comparing to other plug ..., For me they reach saturation too much early.Under the 0 there's other sound to put in...
Use serious plugin.
First solution.
1-put a denoiser as first in chain.(
x-noise Waves or Sony noise reduction)
2-put a desser in second to compress a little only very hight freq
2b-if you want ad reverb..or stereo exp (good ones as TC mega reverb or Renaissance reverb for me the best of all)
3-insert the Waves lin eq broadband and eq your final mix listening and comparing always with good commercial cd.
4-insert Waves LIM pul down the master compression(in the preset Adaptive Multi Electro Mastering) untill the line begin to dance like a shake in the middle of the blue area.
5-insert
the l2 ultramaximizer, pull down the reductor until the reduction dance near 6db.
You have done the play..readjust to obtain a good sound.
Second solution(that I prefer) using the beautifull TC powercore
1-put a denoiser(waves Xnoise) as first in chain
2-put
a desser in second to compress a little only very hight freq
2b-if you want ad reverb..or stereo exp (good ones as TC mega reverb or Renaissance reverb for me the best of all).
3-insert TCeq in your final mix listening and comparing always with good commercial cd.
4-insert
Masterx3 (5 is much difficult to use,and the division of 5 band compressor not always sound better of the 3).
4-(b) if you want you can use TC tl ,a vintage finalizer ..it seems sound higher but it is difficult to see or listen the very limit.
With these two solution you will reach the dynamics and the volume as commercial cd (as more of them are made with these type of solution).
If you want to insert other effect as reverb or spatial enhancer.. use very good reverb and place always before the finalizer.