If the country where you live isn't included in the banned list of the particular gambling site, you should have no issues accessing that site. However, since you mentioned that there are some religious concerns on gambling and it is very much possible that the government had ban those domain names. If this is the case, switching the ISP will not help either because it's banned on the country level. The only way to access those sites is via VPN.
Of course, VPN is a wonderful invention that helps many users in different countries.
Especially in countries where censorship is strong. However, this censorship does not sleep and improves the methods of its work. In some countries, blocking vpn services themselves is practiced.
And if you were able to use your favorite vpn service and everything was fine, then there may be such a moment that you will not get access to it.
According to the decision of the regulators of this country, it will be blocked. And you have to look for another vpn.
It is especially offensive if you paid for the service, and the service is blocked.
Yes its true when VPN can help thousand country when black list IP they still have chance to access not only with casino game but also thousand site when blacklist could restore by using VPN. But talking about keep safety access casino gambling by using VPN? will breach out term of service on casino or not. Many people not see TOS or Term of Service some casino is allowed using VPN or will be mark as fraud and cheater when we adopted VPN for accessing on their casino site. I still looking casino have available access without use VPN afraid if some time account banned reason using VPN.