How do I get trade tokens in Clash Royale?

Could you please elaborate on the process of acquiring trade tokens in Clash Royale? As a passionate player, I'm interested in understanding the strategies and mechanics behind earning these tokens. Are there specific tasks or challenges I need to complete? Are there any in-game events or promotions that offer increased rewards? Additionally, is there a limit to how many trade tokens I can earn, or are they unlimited? I'm curious about maximizing my earnings and optimizing my gameplay, so any insight you can provide would be greatly appreciated.