I need critique/feedback on my singing and song

Hi my name is Keyla!
I'm been writing songs since I was like four and I started taking singing lessons four years ago.
So I decided to take this whole singing and songwriting thing ever seriously but before I adventure into recording a demo I would like to try to get better at my singing and songwriting so this is where you guys come in.
I need some serious critique/feedback on both my singing and songwriting so that I can try to become better! I would love any feedback you can give me. I'm open for any suggestions even if it's just to say you hate it, Please and thank you so much! :)

This is the song I wrote called Why.
https://www.youtube.com/watch?v=jJuieHz-8Rg