Singer that face bullying

Hello, so I created my account two years ago and I didn’t have real content expect posting some playback and selfies (this is where I got my followers from) I started recently to share videos of my passion which is singing and especially doing high vocal notes, but I face a lot of negativity that literally destroys my confidence, some people that I know and my opera teacher says I have a beautiful voice but, like everyone needs to work out which is normal, singing is like a sport the more you train the more you perfect

I’m surprised to face people making fun of me because I sing since I’m a child and I do notes that takes years of training and facing insults, and being make fun of makes me really sad and confused to be honest?

It comes from comments from my own followers that I delete and even some people that I know in real life that says I’m a sh*t

Why is it triggering so much people that I want to share what makes me happy? I don’t understand I am so bad ?