[Ask] Can someone recommend me a deck?

http://i.imgur.com/aVntqDi.jpg

So I'm in early arena 7 f2p, roughly 2100 trophies, and I've yet to find a deck that I really can work consistently. It feels like I can get a nice win streak and then suddenly it never works again and I can't figure out why.

Ive tried most deck types so I'm familiar with playstyles and whatnot, however I was wondering based on my card levels, what would make the best deck?

edit: I'm really bad with mortar decks and could never make them work. Also beatdown decks with like pekka and golem, I would love to figure out but again I'm terrible with them.