In your opinion, is this song mixed properly?
Also, It's definately not loud enough. I tried working on each instrument in a separate channel. Then I put the it in Audacity to amplify the whole thing. But its still to quiet. I use a loudness metering tool, and it says the the song is at -15 LUFS. So idk what to do xD.
What would you recommend to make my stuff louder going forward?

https://www.youtube.com/watch?v=dqb0SifXRYA