You're wrong here: OP says "Ill give a 1/5 of the amount to the one who is able to assist not much I think in amount of 0.08BTC or 0.1 BTC". That leads me to believe there's 0.4 to 0.5 BTC in his account.
On 2017-08-12 he deposited 0.01953317 BTC
On 2017-08-11 he deposited 0.48 BTC, and at the same day he also deposited 0.49411783 BTC.
Now if I assume this is an exchange, it could very well be OP has 0.5 BTC left in his account on the exchange. It doesn't matter how much this address holds, that's irrelevant when it's an exchange.
Yes, sorry I should have looked a bit closer than I did.
What I was trying to say is that when you look at exchange addresses they tend to sweep them regularly so you see a transaction history of deposits being made and then an equal size output shortly after. At first glance that didn't seem to be happening here.
So I just took another look and although the numbers don't match in the way I expected the outputs were all going to 1Czvo2GkbBR9DTUfwmxvFYT5MwjRrPJKhc up until August when it changed to 1CE5T4P6WmFUQvQFwvedgTEc5Z7BSVJLVN presumably when the service split their BCH. This address holds a large amount and probably is an exchange, casino or something similar. Even looking at the output addresses from those 2 I can't find any mentions to identify the service.
But, mrpunxs, isn't it easier if you think really hard which services you used in August this year?
I think you're right, the only place to find the answer to this is in the OPs memory.