Seen 86 damage on screen but after i died it says 56 damage please explain

I jumped on titanfall 2 for a couple of hours and had so much fun. This game is broke so annoyed that I try and support it with time played and money only to get a big massive jobby dropped from a great hight by respawn on my head. Well done thanks for rewarding you're customers with complete bs deaths. God I got melted by a shotgun from about 50 meters and I was dead before I even heard the shots. And that's not even the worst bs death. Please bring on the people who made titanfall 2 as you've clearly hired cheap labour to make and devolp this game. It's a disgrace to respawn how broke this game is.