There’s the problem, you’re new. I don’t believe that soul binds bug out and people not being able to load or DCing seems to be a problem on their end.
Arena is learning, learning what you can do, and what the enemy can do. It is wholly different from PvE where everything is predictable. I too only started doing arena this season (as a healer as well). But you can’t expect to get a high rating the first time trying it.
I’d advise you to watch streamers play, see how they play (even if they dont play your class) so you can learn. Either what an enemy might do or how you can improve. Try to line things as a healer. Use the pillars to block line of sight for casters, run around a pillar if a melee is chasing you. Hex the healer when your partner has CD’s up. Comps matter as well, some classes synergise better with others. Try to guess what others might do and play accordingly, be strategic. And most importantly: Don’t simply blame x is broken and it can’t be helped. Try to look at ways you can prevent getting damaged by x ability, everything is strong right now but nothing is painfully broken that there’s no way to win against it.
Also if you struggle to see your mistakes, try to record your matches. It’s easy to spot mistakes that way.
Also why are you using a PvE trinket? Get another PvP trinket for the vers bonus buff.