Dying in the crucible makes most people stronger. You dust yourself off, learn what you did wrong, and find a way to counter the person and the method they used to kill you. People get the mentality that, because another player killed you and not an npc, you must be bad. This just compounds itself the more a player dies. They just need to step back take a breath or two and realise that crucible and any pvp activities take more than just skill. You need to learn the maps and places people hide, you need to die to know your own weakness and dependencies and how to bolster these so you have less openings. You need a fair amount of luck and as everybody knows, few people walk into a pvp arena as a golden God of death. It is something you have to work at just like the pve aspect. Now sadly it is heartbreaking to lose over and over but I have an idea for you and your friends. Take that crushing feeling of loss and make it your fuel. Every time you lose use that feeling to psych yourselves up for a better game next round. Keep practicing till you start destroying teams and when you start winning so much you run out of fuel, change your motivator. Know that at this point you have gotten so good as a team that you are bringing the same feelings you had at first onto others. Don't play to be legendary, don't play to absolutely crush people, play to give back every ounce of pain you earned when starting. Give back to the pvp community gram for gram all the rough treatment you got starting out. Play not to be feared or revered, play so that the persons on the receiving end would rather put down their controller and mow their lawn than face you again. I hope this helps your friends overcome their inhibitions. o7