Hey Dracoflame, sorry for the late response. I very rarely go on newgrounds. If you wanna exchange discord links, I'll be able to give you feedback sooner than on Newgrounds ( møsstar#2434 if you want :) ).
The intro is really cool. I can really see the hinkik inspiration, you're really good at this style :). Having sidechain when there are no drums is fine sometimes but in this context, I think it would sound so much better with the sidechain removed.
For the buildup it sounds pretty good as is.
I don't have much to say about the drop. It already sounds really good as is. Some more percussion would sound nice, and a punchier snare. As for the melody, it sounds really good, it makes me feel nostalgic. One thing I would avoid is fadeouts because most of the time that's just disappointing for the listener.
I don't have anything to say about the break. Aside from the sidechain and the snare, it's really good. I really like the introduction of the main melody and how the 2nd drop just hits. Omg, that key change is so good.
Nothing to say about the outro, I love everything about it.
Overall I think you're really talented considering you just turned 15 when you made this track. Looking forward to seeing what you become in the future :).
Btw you inspired me to start uploading music again with this song, so thank you so much for that.