So you are doing KYC and while you are waiting for the process, you keep playing till you lose half of your balance? That's a big mistake imo, you should stop while the KYC is in the process but of course it is your money and you have full right to do anything with it. It is just unfortunate if you lose what you have won while you are doing KYC which means that you are willing to withdraw it but you did not patient enough to wait. Hopefully you still have some balance left now and when the KYC is verified, you can withdraw your remaining balance.