Yes, there are many online casinos that offer free no-deposit bonuses. However, make sure to always take a look at the T&Cs of the bonuses before you activate them.

BetUS casino is one of the most recognizable online sportsbooks and casinos in the world. It’s been around for almost three decades, it has an A-rated trust rating, and it offers a wealth of top-tier bonuses that you can grab via fiat currency or crypto.
BetRivers and Sugarhouse are the same company but with a different name depending on where you reside.

Ricky Casino is also a cracker real money gambling site if you enjoy competing in casino tournaments. Most of these tourneys are for selected slot games, giving you the chance to win up to AU$1,000 in cash if you find yourself topping the leaderboard.

AussiePlay: Aussie-themed online casino
BetOnline – Overall best New Hampshire gambling site

Most online casinos make it super easy for you to make a deposit. All you have to do is head over to the banking section of your casino account, click "deposit," choose a payment method and then enter the amount you wish to deposit.
Fiat currency not supported
With a total prize pool of $500,000, they also hosted one of the largest blackjack tournaments we’ve ever seen, which bodes well for upcoming matches among your fellow players. There is a 350 percent bonus for cryptocurrency users in addition to the regular 250 percent match in fiat currency. Plus, the $100 refer-a-friend program is among the best in the business.

Conclusion
PlayAmo has entered its sixth year of existence, and over the years, has developed a solid reputation for being a reliable casino site.
There's a huge variety of bingo rooms on offer here, for both high rollers and casual players. You can also compete for considerable jackpots that pay out hundreds of thousands of pounds each week.