My facebook reach & engagement has dropped by over half in the past week. Still posting good content, similar posts a month ago were reaching 15k+ reach with near 1k likes. Now posts have a reach of 1.5 to 5k reach, maxing out at about 200-300 likes. I know for a fact these should be performing alot better However I did play the audience settings in the back end (setting demographics etc.) but I turned it off after one post failed. I checked these settings in the general tab today ,but there nowhere to be seen, however I noticed when scheduling posts the option was still there to edit the audience. Was this a new change by fb?