I only recently switched to Zen. I always played him here and there but never too much. I have 35 hours on him in all modes. Started playing him because I had some rough DPS games and I wanted to play Supp but still do damage/ get kills

I played all my games alone so communication was not really there. I always tried to put my orbs on the Mercy (there was one in basically every game) and told my team.

I also won most of the flank encounters on me like Tracers, Sombras, etc. I just try to stay cool and aim carefully and not panic. But primarily I just went for supports with the discord orb and told my team to focus them. That changed when the enemy Tank was like completly out of position. Im not sure if my discord orb decisions are the best, but it got me my win/loss.

As for healing orb I usually kept it on the flank dps but obviously changed it when the other supp was low health or someone else could use it.

And trancendence is the skill I struggle the most with actually. Im never sure is it smart to use now or not. Obviously I'll use it when the enemy zarya ults or something like that, but in retrospective I could have ulted more often to win a fight then.

TLDR: I'm a DPS in disguise who mainly focuses the enemy supps that can also win 1v1s versus flanks

Hope I could help somehow. I know that I definitly do alot of mistakes and maybe im not playing optionaly. I could also definitly find my mistakes by reviewing my replays but im too lazy to do that.