Here are some reputable sites with its own blackjack games:
1. crypto.games, and the rules of their blackjack is as quoted below:


2. Coinroyale, rules:

I take few rules only based on your main concern, so I think Coinroyale is the best choice for you as it uses pays 3:2
Both sites has min bet 100 satoshi and I do believe those two sites are reputable and has instant withdrawals.