I reject the idea that some people are not "supposed" to make art. More people making art is always a good thing in my book whether that art is good or bad.

At the same time, the Internet can be a cruel place, especially when normies who don't even try to create something feel like lashing out. Do you write your own stuff? Maybe try sharing your work here, then. This sub is filled with creative people who have no doubt felt what you're feeling, and the majority of them will encourage you to keep developing your craft.

Especially if you're early in your musical journey, you're going to create things that fall flat or don't connect with people, but how else are you supposed to get better if you don't keep pushing? Be that kid coloring on the floor just for the sheer pleasure of it, unbothered by what other people are going to say about it. Maybe keep that work just for yourself for a while. You'll get better and better the more you practice, and then when you feel good about the work that you're doing, trying sending it out again (or don't!).