@swogerino, @Fivestar4everMVP and @Saint-loup
I realized what made the freebitcoin website unable to be accessed easily in recent days because it turned out that this casino was included in a website that was blocked by my ISP so I had to access it via VPN to be able to access it perfectly.
All sites containing gambling would be blocked by almost all ISPs in my country. Usually when a site is blocked a positive internet notification will appear but using Brave Browser the notification doesn't appear so I don't know that it has been blocked.
After being a member of this casino for quite a long time, freebitcoin was one of the casinos that could be accessed without a VPN, but now that's not the case anymore, and because FBIN is very VPN friendly, there are no worries about using a VPN.