How do I play zoe lategame?

Hi, so I always kinda run into this problem on zoe where I usually play well early/mid game but then feel completely useless lategame. I know that zoe is not a scaling champion but since lategame is often (at least in my elo at around gold) where the games are decided it feels like I have no impact on whether or not we win since I've had many games where I've carried the game early and still lost. I do tend to die a lot lategame but I don't know how to avoid it. If I play alone I get caught and die and if I group I feel like I don't contribute much in teamfight or I just get zoned out or immediately killed. I know it is because of mistakes I make but I don't know how to improve and it feels very frustrating.