All you do is try and try. Lfg sites are horrible, because if you aren't 30, no one will invite for a hard mode raid. It is quite the conundrum, as I am barred from 30 because of other players.
It really is an awful feeling to have a game that you look forward to for almost 3 years be awful.. Being ill with spinal issues, I looked forward to some game like this. This was not the case.
Bummer, dude.
Edit: Thank you all for your replies and kindness. I'm glad to see nice people still exist and can give helpful advice.
Edit 2: So after physical therapy today, I decided to do the raid on my alt titan. Lo and behold, all your blessings have graced me with Red Death and the chest piece I needed. For those on Xbox One, I am willing to help others when I am not busy. My gt is BlackSteelDragn. I really appreciate the support.
Im lvl 28 and never complted raid once, i get invited to hard mode and normal raid all the time. I decline everytime. So your better than me if u completed it.