Try www.crypto.games! Crypto.Games has been on the market for a very long time. They currently have Dice, lotto, roulette, minesweeper, slots and many other games. Supports a good number of coins including bitcoin. Regular promotions also take place and does have an active community. The chatbox is always lively.
If you want to gamble, try crypto.games. If you want to hold your coins, I wouldn't suggest any website. Hold your coins on your own wallets!