A demo or practice mode before real money play is a really practical idea — it helps people experiment and learn without risk, and can make the transition to real stakes much smoother. Being able to test strategies, get comfortable with mechanics, and see potential outcomes would likely reduce frustration and encourage more thoughtful play.
If anyone wants to talk more about how they use practice tools or tips for getting the most out of a demo mode, feel free to DM me on mb whatsapp iphone — always happy to share thoughts and learn from others!