BitBet not works anymore so I want bet with anyone with 2of2 multisig transaction
Two out of two isn't the right way to go. What happens when the losing party refuses to let go of their funds? You will end up in a long (possibly 'permanent') stalemate. Just use what was suggested in the link that you've provided:
Instead the parties could do a 2-of-3 which would allow a mediator to settle a dispute, that works exactly the same but instead of two public keys three would be provided.
Ok, I moved to 1:4 ratio
Odds are bad for the 'no' side. I don't see why someone would want to risk 4 BTC for a potential win of 1 BTC.