Can vouch for beeper. My mind was blown when it JUST WORKED.
I use beeper to chat with my friends on insta and its definitely a really good method to communicate with the insta friends instead of using the app. Though when they send reel I can't really see it natively and it opens web browser but that's what I want and I don't watch the reels the guys send anyway.
You can use an application like Franz or Beeper to have ONLY the chats and nothing else.