You have to get more money in earlier with this hand. The 7 is a scare card that makes you think of folding when really you never showed any aggression the whole time, Viliian has Qx as easily as KQ here and you have not defined your hand at all. His aggression on the river could just be a mid PP thinking you missed your FD. I call.

I'd also start raiseng Pre at least a $1, and from UTG or I think I'd raise even more.

One other thing, It doesn't matter if there are 14 players sitting out, if you only have 6 being dealt, it's 6 max and play accordingly, if everyone sits out and your HU you play accordingly.