Try to burst Zhin. When he uses Counter, run to a safe distance, then open fire like hell. Additionally, his attacks are very inconsistent, so if you are a character with a burst type weapon, you will usually win.
If playing against a Viktor, or any other hitscan champion, try flanking them, because they will have a longer time to react to the damage, and you can unload about two shots before they will detect you and start firing.
While Maeve is very difficult to pin down exactly, champs like Drogoz or Evie don't necessarily have to aim precisely in order to hit her. Additionally, abilities like Seedling are extremely hazardous to Maeve, because they have a very large AoE.
Maeve has a particularly harder time than most champions with aiming, as her weapons have drastic gravity drop, and have projectile speed, which means moving around unpredictably will make yourself harder to kill.