I recently bought Kha'Zix and i'm absolutely terrible with him.
Supposedly Kha'Zix should win 1 v 1 fights with most champions but I never seem to be able to do it. I go mid with him and get destroyed no matter who i'm facing. I seem to do better against true AP mids but 2 days ago I fought a Tristana and couldn't help but die all the time. Later in matches, I try to go for targets but I still die very easily before I can do some significant damage.
How can I improve? Should I instead opt to go red Elixir and kill the AP mid as soon as I can?