How to get free coins in cash billionaire?

Excuse me, I came across this intriguing topic about getting free coins in "Cash Billionaire." Could you elaborate on some legitimate ways one might acquire these coins without investing any money upfront? Are there any specific tasks, promotions, or rewards programs that users can participate in to earn these coins? I'm curious to know if there are any proven strategies or tips that have helped others successfully accumulate free coins within the platform. Additionally, are there any potential scams or risks I should be aware of when pursuing this opportunity? Thank you for your insights.