Most gambling sites that offer 10x bonuses have extreme wagering conditions that will rip of all the bonuses, sometimes you end up losing your deposit but when you are lucky, you may win a few times but can never win an amount that will make you reach the minimum withdrawal
Also, there might have many other restriction to receive the bonus because there might have unclear rules, many games won't be count as the wagering to collect the bonus. And many sites ask kyc if reach the wagered and bonus. And finally they scam the deposit bonus by the name of bonus.