It depends on the type of online poker you want to play. Most crypto casinos offer video poker, which is played against the dealer rather than other online players in my opinion and experience, video poker can be a bit boring and the house has a significant edge making it more difficult for players to win. Few casinos offer the classic poker because it’s not that profitable for the house as much as other types where you always have to play against the house only.
they never have any offers or anything for normal people, you need to wagger like 1000 usd, 5000 usd atleast in ONE weak to get some offers...
Since you mentioned offers i think casinos giving bonuses only on video poker maybe after playing and wagering some amount of money but doesn’t worth your money as it will be hard to achieve and claim.