How can I earn more lives without paying for them?

You can only earn as much as 5 lives in total if you do not plan to pay for them. To earn them for free, you have to option to watch video ads in exchange for 1 life. Other than this, you also have a slim chance (1 out of 6) on landing on the life bonus on the roulette (daily bonus).

If you do plan to get a better value for your coins, we highly suggest that you purchase the unlimited lives for 6 hours in exchange for 69 coins. This way, you can re-try as much as you want without worrying about losing a life. If by any means you have the free time to kill, it would be easy to earn back those invested coins in that span of time.