I have a 94 Ford bronco full size has 212k miles I’ve noticed my transmission is shifting hard and now I can not get over 70mph it’ll bog down the rpms will drop and my speed drops like crazy. This began Friday 01/15/21 today 01/18/21 having issues getting past 30 when it does it still shifts hard and even going down a hill trying to speed up it will do this. I’ve never owned one of these and I am definitely not a transmission mechanic so any advise is greatly appreciated. Ide hate to see it go. I have a vide but not sure how to post it.