in really urgent conditions, using a VPN is the only way but you need to remind that it would be better to ask the CS of the gambling site you want to play first, besides that paid VPNs have good features and the majority of paid VPN users don't have problems opening the site they want
Yeah the fact is that casinos views the used VPN as an offense unless in situations where the gamblers have to be very limited in it usage and avoid being detected because it leads to outright banned, even though some casino approve VPN usage players should be careful enough not to get their activities picked as red flag by the security teams.
My suggestion to those who wana gamble using VPN for whatever reason, is that you have to open and get your account verified first it possible before using VPN if you visit a region where the casino is restricted that way you are free to use it.