How to buy pyth on dex?

Could you please elaborate on the process of purchasing Pyth on a decentralized exchange? I'm particularly interested in understanding the steps involved, such as choosing a suitable exchange, connecting a wallet, and executing the trade. Also, are there any specific considerations or precautions I should be aware of? Additionally, how can I ensure the safety and security of my transactions? I'd appreciate it if you could provide a detailed breakdown of the entire process.