Instagram will use your art, because you use their app. It’s time to drop Instagram.
Is Cara the solution? The artwork on there is really high-level. I signed up for Cara, but I don’t think I’ll really be using it. At this point, I can’t picture myself putting any of my drawings or art on Instagram. Over time, I might change my opinion and post stuff on Instagram again. But really, this is the time to kill Instagram.
Instagram was always a feature-poor service. I wish I could point the non-artists to some place else, but Flickr limits you to 1,000 photos for their free level. Many people I follow on Instagram don’t have 1,000 photos. But there are many who do have well over 1,000 images. After 1,000, it costs $73/year. Ouch.
The end story is: Do you support Meta making images that look like YOUR art? No way.
Please consider this: stop using Instagram to post your art. Otherwise, you might see your art being generated by their AI.