I think you're on the right track. One trick to try: while you're putting your track together, keep all of your different instruments mixer tracks levels at around -3db to -6db in your mixer. Adjust them so that they all sound about even as far as volume goes. Once you finish your track, then you can put an EQ and a Limiter, and a few other plugins on your master track, and then you can bring the master volume up to just under 0db. If you set your limiter to -0.1 db, then you should have a nice loud sound, but it's below the clipping point, and you won't get that unwanted distortion.
There's a lot more to mixing and mastering than this, but it's at least a good start. I don't have enough room in the comments to get too detailed. Check out videos on Youtube for more tips and tricks. There are a lot out there that can help you tremendously.
Keep it up. Like I said, you're on the right track.

V.

Hey man, whenever your levels go above 0db, you start getting what's called clipping. That's when the frequencies are too high and there's a distortion where distortion shouldn't be. I hear a lot of that in this track. When that happens, it's not considered lo-fi. It's just levels being too loud.
If you were to go back and adjust your levels, you would get a much cleaner, and much nicer sounding track.
Other than that, this is a cool piece.
Take care.
V.

Something different, but special, that is true.