Can I buy Optimism on Coinbase?

Could you please elaborate on the following query? I'm wondering if it's possible to purchase Optimism tokens on the Coinbase platform. Given the current cryptocurrency market trends and Coinbase's offering, is Optimism available for purchase on their exchange? If so, could you provide some insights on the process of making such a purchase? And, if not, could you suggest alternative platforms or methods to acquire Optimism tokens? Thank you for your assistance in clarifying this matter.