Keep your eyes on them
Make sure that you watch their emotions, facial expressions, and how they talk while paying. If they are getting really frustrated or raging out this is a sign that you need to keep them off that game!
pay attention to the game
Pay attention to the game title and research it. When researching it make sure you check Reddit and YouTube for reviews. Try to see what others are talking about.
watch the chat
If your child is playing on Roblox, make SURE that you are watching chat at all times. At the first sight of any talk that you don’t like, PULL THEM OFF!