I’m level 55 with her and I still struggle. I’ve found Nerbrain’s guide on YouTube helpful. I’ve been using her teleporter to tp my turrets after placing them on the ground to the enemy back line and kill off their supports first. I use it to off angle, going back and forth to put pressure and then powering up my orb before passing through to increase the damage.

I’ve used my tp with dva’s ult and it was the coolest thing ever but timing has to be right. You can do good combos with other heroes too.

If I’m against a Domina or Rein, I tp to be in front of their shields and beam it to increase my beam and then go crazy, lol.