https://www.instagram.com/nancyzhou_violin/ https://www.instagram.com/joshuabrownviolinist/ https://www.instagram.com/kersonleong/ https://www.instagram.com/violincase/ https://www.instagram.com/augustinhadelich/ https://www.instagram.com/weatherclef/
I also enjoy just browsing the discover tab on instagram. If you mostly click on these instrumentalist accounts, it's pretty good about finding more.