I'm a F2P level 9 (almost level 10 ) in arena 8

Here is the single player deck I use:

Bowler Level 3
Miner Level 1
Inferno Dragon Level 1
Graveyard Level 2
Ice Wizard Level 1
Skeleton Army Level 2
Arrows Level 10
Archers Level 10

I like this deck. It has counters for everything


Here is the 2v2 deck I use (I usually battle with the leader of my clan, I am a co-leader, and we both use exactly the same 2v2 deck):

Inferno Dragon Level 1
Graveyard Level 2
Lava Hound Level 1
Tornado Level 3
Arrows Level 10
Ice Wizard Level 1
Miner Level 1
Clone Level 2

The 2v2 battle deck is OP. Sometimes we lose, but we win most of them