Can i buy Terra Luna on MetaMask?

Could you elaborate on the feasibility of purchasing Terra Luna tokens using MetaMask? As a cryptocurrency enthusiast, I'm keen on understanding if this popular wallet supports the direct acquisition of Terra Luna, given its growing popularity in the decentralized finance space. Does MetaMask allow for direct token swaps or does it require an additional step, such as using a decentralized exchange? Additionally, are there any specific requirements or considerations that I should be aware of before attempting to make such a purchase? Clarifying these details would greatly assist me in navigating the purchase process.