How do you get free pets on Adopt Me?

As a keen observer of the cryptocurrency and finance landscape, I'm intrigued by the parallels that might exist between acquiring virtual assets in the realm of gaming and those in the financial world. Take, for instance, the game "Adopt Me," where players seek to acquire free pets. Could you elaborate on the strategies and approaches one might adopt to successfully obtain these coveted virtual companions? Do they involve completing certain tasks, engaging in trades, or is there a more nuanced approach? I'm curious to know how the mechanics of acquiring free pets in a game such as "Adopt Me" might mirror those of securing valuable assets in the world of cryptocurrency and finance.