This is called self-exclusion. It means you will be refused service from these venues and websites. Gambling businesses must offer this option by law. If you think self-exclusion could work for you, make sure you exclude yourself from all the places where you may be tempted to gamble.
Gamban blocks all gambling apps and websites worldwide, including niche ones like cryptocurrencies and e-sports betting. Gamban can be installed across all your devices, including; computers, mobile phones and tablets, working on Mac OS, Windows, Android, and iOS.