I am not sure what you tried to do there.. Music is pure ear rape.. Quality is terrible..

You recorded it in 1080p and rendered it in 4K, somehow it is just worse.
If you recording a specific resolution, output it in the same resolution with a higher bitrate.
Not sure what settings you used with this one, but it's awful.

The edit is okay, but you definitely need to work on the music part, how you didn't notice how loud it is and annoying lol? I rather listen to some old hardcore music than this, seriously would sound better for sure.
Lower the decibel by -8 db to -10 db on the music part.

If you render in 1080p, output it in 1080p and if you want to go 4K, then don't forget to render it in a higher bitrate... 40 mb/s to 60 mb/s bitrate should be more than enough for 1080p.
But, don't forget to record in higher bitrate as well, the original file should be at least 60+ mb/s bitrate.

With that said, unfortunately, I am not going to reward you for this video.
Work on the points above and keep the edit, it will be great, I am sure of it.