I don't know where to post this.

Why is this game so hard?
I have no idea how to play this game. At all. Not even a tiny bit.
How the strategies work, how gear and weapons work, how all of the ingame things work??

I get Surprise Ending activate sometimes 2-3 times in a single match, and sometimes it doesn't go off for days...
Just a while back, I changed from low level weapon(about 240dps) to high epic one(about 440dps) and not a single digit raised in actual damage. Everything is the same..
Those strategies, I'll probably never understand.

I am just so sad that I try at this, and I spent a lot of time(you know, just to check in daily, etc) and I have nothing to show for it.
I know all about that self pity nonsense, but can someone please give me some tips on how to actually do good? (dont worry, I read all possible guides)

Thanks.