Almost all the artists I know make a living doing these very things you deny to be art...a very few are hobbyists, who because of their day jobs can engage in their 'art' independently...and some supplement their day jobs by producing marketable materials that you deny to be art...but they do very much the same sorts of things as the 'professionals.'
Am I hearing you correctly, that only Artists(TM) can determine what art is and is not?
Art is a specific and unique kind of human endeavor. It is defined by it’s purpose and evaluated by how well it fulfills that purpose; not by whether one gets paid for it, or how popular they are, or how technically complex or proficient it is, or how often one engages in it. If the purpose one engages in it is profit, it’s not art. If the purpose is to decorate, or titillate, or entertain, or proselytize, or aggrandize, it’s not art. Because that’s not why artists make art.
These other purposes may be why a benefactor commissions an artist, and an artist may choose to fulfill their desired task. But that does not mean that what results from this is art. Though it could be. Even though it might also fulfill one or more of these other functions.
I know it’s confusing for people, but that’s just how it is. Humans engage in creating works of art for the primary purpose of expressing to other humans what, and how they are experiencing and understanding the world. The artist is offering us a glimpse of existence through their eyes, mind, and heart. This glimpse may be beautiful or it may not be, it may be entertaining or it may not be. It may be educational or it may not be. It may be poignant or it may not be. It may be popular or it may not be. It may be titillating or intriguing or it may be revolting. It may be masterfully executed or it may be crude. But none of these attributes are what define it as art. What defines it as art is it’s intent to share one human’s unique existential experience with other humans.
It’s a difficult task, and not everyone is able to receive this kind of gift. Their eyes and mind are just not open to it. And that’s just the way it is.