Luck does play a part, but there is only so much you can do before it's mostly up to luck. Even the people I talked to all the said the same thing, that I just have to wait and be lucky, not much else I can do now after trying hard to gain even a tiny bit of exposure after 4 years.
Well, I hope you don't mind me indulging a bit in your channel for some critique.
If you've done everything, then you would know that minecraft videos are a dime a dozen. You're making videos that are barely any different than all other channels making mincecraft videos. Do you really think it's a luck thing in this matter? Or does it have more to do with the fact that you're engaging in content that so many have done before you and, quite frankly, done it better? Nothing personal, but I think you have to be real with yourself and your content here. If you're unwilling to develop content that is well better than ones that came before you, of course you won't see success. So, on content alone, you're already behind those supposedly relying on "luck."
Now, let's take a look at one of your more successful videos: "Top 15 Reasons Why the WII U is Not Bad." First, this the perfect type of content you want to address if you're a gamer. Top lists and anything sharing opinions on a hot topic are big players in YouTube. Unfortunately, your content wasn't up to par in terms of quality. There's a lot of room for improvement there. Again, we're looking at a content issue, not "luck."
Another video where you seem to go in the right direction is your "MINECRAFT ANIMATION" video. Even though it's in a diluted genre, the fact that you're doing something more creative than just gameplay is very attractive. To me, it seems that the quality still needs work, but better than your other videos. THIS is the type of content you want to pursue. If you know that this video was one of your big hits, then why not only create more, but improve on it? Why not create more "360" videos, another popular one of yours, and work on the quality?
So in my eyes, your issue certainly isn't just luck. It's focusing on content that will be successful and then improving on it. You sound young, so you have a lot of time to improve and grow. Honestly, if you're willing to put the effort in, you can make some extremely popular "360" video game videos.