People generally only accept escrow services from trusted, well-established members of the community. Nobody would accept an escrow service from a newbie account because of the high amount of risk involved - the escrow might run away with the funds.
If you want to build your reputation here, you should be active and write constructive posts, and you should trade slowly as your rank increases. Eventually, you will have made enough honest sales that you will have built a strong trust profile and will have a good reputation, but this will take time and effort.
what happens if the Well established and trusted escrow member also cheat , as that transaction is heavy then who is responsible for that loss of transaction . we cannot believe anyone until unless you know anyone ,