Gonna be honest with you.
Instagram was the place to be 2015-2019.
Now the life has been zapped out of it and no one is really "Doing it for the gram" anymore.
I've seen such a huge drop in traffic myself and I'm part of a photography community n a large city of 4 Million people. Even hot chicks are getting less likes these days.
Before I had tons of girls willing to do tfp and get practically naked just to have something to post. Now no one gives a shit and it's hard to schedule shoots because people have realized they don't see a return on their time/posting/getting likes.
The ones still on the Gram making big numbers are the ones who were already big time before the decline, who still use the platform because they already have the established audience to make it worth their time.