Humans need to communicate to express ideas and to enable cooperation. Communication requires symbols, expressed in sounds or visually. Every effort at communication requires creativity in speaking or writing, whatever. Humans make art all the time, because it is necessary.
Sometimes there are things we want to express that are very difficult to express. These are usually esoteric ideas about spirituality or beauty. Because words are difficult to use to capture these ideas, we use other symbols. We call these collections of symbols paintings or sculpture or stories or music or dance.
Sometimes there are people who spend all their time working at symbol creation and manipulation. If they don’t do anything else, and they become very expressive in whatever means they use to manipulated symbols, we call them artists.
However, we are all artists, because we all need to communicate. Some of us do it much better than others. However, it is not an esoteric practice. It is something we all have to do, and without it, I’d venture to say humans would not have survived as a species.