P2P would be the only option available to you, however finding a seller at prices below market price is tough and you might have to waste a lot of time getting that order filled even on well known p2p exchange sites.

People sell bitcoin at profit not at loss. Still you can get a deal done depending on how low you want to buy it at.

I suggest you open a thread in the "Currency Exchange" section of this forum and make sure to use an escrow the mediate the trade. Never send money to any forum user who is a newbie and has no prior trade history. If that sees no responses, visit the p2p sites like localbitcoins, hodlhodl etc.