because of personal reasons I don't give collaterals.
That's obviously just an excuse
[I highly doubt you have any valid collateral, to begin with].
I can give you 5% of my bet earnings every year for the next 5 years,
Yeah, right! You won't.
I can provide you with screenshots of my freebitco.in account after the transaction to prove the funds are really used for betting on freebitco.in if you want.
Nice try but it's not going to happen.
Ok Mr. Free Market
I'm sure you know what you need to do next: Lock this thread