I understand. What online wallet would be best for me for day to day gambling transactions? Thank you for replying sir.
Don't use any online wallets. Use desktop wallets.
I recommend you Electrum. If you use different address on every transaction then there won't be a problem.
But remember that; If you want to sell Bitcoin and get cash, you need to launder this gambling btc. So you've some options;
1- Using bitcoin mixing service like bitmixer.io
2- Using exchanges to launder money. For example: you've 1 btc, send 0.2 to c-cex, 0.8 to bittrex, then send 0.4 from bittrex to c-cex, then send 0.6 from c-cex to btc-usd exchange, and 0.4 from bittrex to btc-usd site.
If the second option is complicated for you I suggest you to use mixing service, it's quite easy to use.
Thanks for the information. So I use this mixer so the people I send BTC after won't know where it came from? Where do you suggest selling my BTC for USD when that day comes?