Budgeting for real-money online entertainment means setting a spending limit...

https://mega-wiki.win/index.php/What_Should_I_Put_in_My_Budget_Category_Name_for_Gambling%3F

Budgeting for real-money online entertainment means setting a spending limit each month to keep control over your money. Expect your expenses to change, so create a flexible monthly ceiling. Use deposit limits to avoid overspending