Ultimately through my experiences it's not due to "bad luck" but you are putting yourself in bad positions. You are probably opening too many hands, and when you get "lucky' with hitting your draws you think you are playing well and winning, however you are still making -ev plays and that is why in the longrun you are losing. Plug your holes, fix your leaks, and analyze your play if you want to improve, don't just base it on 'luck' good or bad. Just because you have Aces, doesn't mean you should win the pot, you have to know when to hold em and when to fold em'