Instagram is a difficult social network, at least I only managed to sell an avatar pixel once, all the people who have bought me a drawing at least once do not have instagram, it could help you if you have a Twitter or Deviantart account

Thank you for replying! I will see if he has a Twitter. He had a DeviantArt for a while but it's been very inactive.

He should invest time to see economic results, that he publishes his best drawings on Deviantart, since it helps to maintain the original quality of the works, and that will help him find clients.

A friend told me not to insist on Deviantart because people would want to pay me in points... but I found good clients there too, since I am very insistent and constant

A social network must be supported by a gallery, if you do not like Deviantart, you can try ArtStation, or you can also work with carrd.co I have it only for my social networks, but I will show you an example of what it can do too

https://lunella.carrd.co/

I passed along the information you gave me. He said "hell yeah" when I showed him the carrd.co link. So thank you for getting a "hell yeah" out of my kid ^v^

Hahaha, I'm glad to hear that c: