Can’t imagine finally hitting my dream multiplier then casino seize my profit.
That is why you should make sure your account is verified and you have provided all your personal documents, as required by the house, to complete the KYC process, before starting to place your bets on the casino's games. And even if you don't want to do this beforehand, you have to be assured to be able to provide every potential documents they may ask, once you hit a jackpot and try to cashout a higher sum of money from the platform. Don't wait hitting the jackpot to decide if you will do the verification or not.
If you aren't able to do the KYC process, don't even begin to gamble at the casino. Rather, look for alternative casinos where KYC isn't mandatory, so that is one less nightmare to worry about. Of course there aren't many options of casinos like that, but you may find it if you do your research. One popular platform is freebitco.in. I've never heard they asked for KYC from their users, although I must say the house edge is pretty high when compared to its casinos pairs.