This review is for you to make a better song so dont take it as an insult :)

First of all, it has a very repetitive, there is no drop and no ending, the same thing is repeting everywhere, you should maybe add some more changes into it, an intense drop for example. Secondly, you need to add more instruments into the composition, a synth lead or a piano for example. Finally, I understand that you are only 13 yrs old and it is pretty surprising that a person as young as you can make such thing like this, but remember, you can always do better, I am 14 and yeah me too I aint very very excellent with music.