How do I purchase cryptocurrency in the crypto com Defi wallet?

As a curious investor interested in diversifying my portfolio into the world of cryptocurrencies, I'm wondering about the process of purchasing digital assets using the Crypto.com DeFi Wallet. Could you please elaborate on the steps I need to follow to successfully make a purchase? I'm particularly interested in understanding how to set up the wallet, fund it, and then execute a buy order for a specific cryptocurrency. I'm also curious about any security measures I should be aware of to ensure my investments are kept safe. Thank you for your assistance in navigating this exciting yet sometimes complex landscape of digital finance.