If your definition of art includes things made without a self, a thinking mind with intention and agency then go ahead and ponder how the Sun and human DNA are art, I’ll wait for when you come back with a new definition.

that there can be art made without a self does not imply that anything made without a self is art.

that there are things made which are art does not imply that anything made is art.

that things can be made does not imply that everything is made.

You are welcome to produce a definition that separates those things.

You have seen my definition. By definition an act of self-expression cannot occur without a self.

Without clarifying what makes something art, your claim that art can be something produced without a self (i.e., is not self-expression) demotes art to the level of “any random thing”.