CBDCs are issued by the central bank/treasury of a nation as an official currency of that nation. Cryptocurrencies are developed by random individuals/groups and have no inherent value.

CBDCs are a nightmare from a security/privacy perspective and should be avoided at all costs

https://www.cato.org/study/risks-of-cbdcs https://decrypt.co/92129/shapeshift-erik-voorhees-cbdc-orwellian-spy-surveillance-nightmare