I have recently experienced this ,Went from messaging every day ,picture swaps and video calls to replies becoming more and more less frequent ,having to instigate conversations between replies ,when video calls mentioned the subject changed ,being told “I’m tired and off to bed now“but still seen in conversation 2 hrs later ,Then messages not being read ,conversations being left without reading the messages ,It gets to a stage when you think why should I bother
Also being unfollowed but my profile being viewed regularly (5 times within an hour the one day,week before last) then blocked for not wanting to be drawn into a “Cock fight“ to be mocked again