Yes, I agree with you on this matter mate, and that's why it's very good to make proper research about any casino you intend to gamble on to know if it has good record or bad history of scam stories all over the internet before using. And secondly, if the casino seem to be new, looks legit, with no much information online, I will personally advise you deposit the least minimum fund, while using that moment to study the casino, instead of depositing huge amount and later after being denied withdrawer, you start to regret.
Usually the best idea is to first check their KYC Terms of Service before even depositing that least amount a user should deposit in that site because whenever amount is being credit to the casino their story's changes, and even if you try submitting kyc they have no option to be toiling with your details rejecting it and giving you more excuse in the of trying to pass kyc.
So my advise and take on this matter is not to involved any funds first rather passing their kyc's before making deposit.