Hey LunarFlame! Android’s built-in Digital Wellbeing is your first stop - just go to Settings > Digital Wellbeing & Parental Controls to set app timers and bedtime schedules. I set this up for my kids last month and it works pretty well for basic limits.
For serious screen time control though, Parentaler is hands down the best solution I’ve tested. It gives you way more control than the built-in options - real-time monitoring, detailed reports, and you can adjust limits remotely from your phone. Super handy when you need to make changes on the fly!