Very nice sounding and inspiring voice and melodies, but the track suffers from overcompression/pumping effects on the technical side.
I'd try to keep the mix maximum volume peaks at at least -6dB or something (it's headroom, and it's different from dynamic range) without using a limiter (yet), or adjusting the master fader, only using individual channel volume adjustments, panning, non destructive EQ moves( cut rumbles/ useless frequencies, enhance details with care, cut instead of boosting) and only use gentle compression as last resort.
The built-in presets often kill the sound when applied to anything else than a kick/bass.
From time to time, listen to your track at very low volumes, like very low (less than 10/100), if you can still hear pretty much every detail, then you're good, and you can immediately notice when one instrument is too loud or bass heavy because they will jump at you screaming^^
After that, tasks like maximizing overall volume become very easy.
So easythat if you work with FL's limiter, you could just turn the gain knob, make sure the waveforms peaks do not go over the green line, put the limit to -0.3 dB and call it a day^^
You maximized volume and kept dynamic range, GG!
Of course, it's not THAT simple, sorry, but a good mix will obviously be easier to master.
I'm still learning all of this as well, but those guidelines helped me.
Have fun!