3 Man camp diving me over and over again when I play well... How to deal with it?

So in the latest game I played as Lux vs Zed I was playing fairly well. I was buying control wards and trying to keep vision around the river and prevent myself from getting ganked by Xin Zhao. But what happened repeatedly was that I got ganked by both the Xin Zhao and bot lane Morgana and I was unable to farm or do anything at all. I ended the game with an even score but I felt like i was useless the entire match because of it, and my jungler Amumu didn't help whatsoever. How do I deal with this when I'm not putting myself in a gankable position but I get dove and such anyways? It seems to happen a lot and it's pretty tilting. I played this match on my other acc Yor1ck Rolled.