Eighteen and Above, Without Exception
Yono Games is for adults. Registration asks for a mobile number and verification for exactly this reason. Do not let a minor use your account or your device to play, and do not create an account for someone else.
Decide the Limit Before You Open the App
A limit set in advance is a real limit. A limit set halfway through a session is a negotiation, and it moves. Before you start, choose two numbers: how long you will play, and how much you are willing to spend and never see again. Write them down if that helps.
Treat that amount the way you would treat the price of a cinema ticket. It buys the entertainment. It is not an investment, it is not a plan to make money, and it will not come back on average. Games with a random result are built with a margin in favour of the operator, which is what pays for the game existing at all.
Chasing Losses Is the Point Where It Stops Being a Game
The most reliable warning sign is the decision to keep going in order to get back to even. It feels rational and it is not: the next round has no memory of the last one, and the odds do not soften because you are behind. Stopping while behind is the same decision as stopping while ahead. Only the feeling is different.
Other signs worth taking seriously: playing longer than you meant to, hiding how much you play, borrowing to keep playing, playing to escape stress or low mood, or losing interest in things you used to enjoy. Any one of these on its own is worth a pause.
Practical Steps That Work
Turn off the notifications that pull you back into the app. Keep the app off your home screen so opening it takes a deliberate action. Do not save payment details in the phone, so that adding money requires typing them each time. Play with a clock in view.
If the app offers deposit limits, session reminders, cooling-off periods or self-exclusion, use them. They are most effective when you set them on a calm day rather than a bad one.
If It Has Stopped Being Your Choice
Talk to somebody. A family member or a friend is a reasonable place to start, and a doctor or a counsellor can help without judgement. The important step is saying it out loud to one person, because problem gambling survives on being kept private.
For the industry side of this in India, the All India Gaming Federation publishes the responsible gaming charters its member platforms sign up to, which is a useful measure of what a platform should be offering you.
Whether these games are lawful where you live depends on your state. Check what applies to you before you register or add money.