What is createElement, cloneElement for?

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Good afternoon, I met questions about these methods on the toaster several times, but I sincerely don’t understand what they serve for, if cloneElementI heard something like this about:

Clone the component passed to props and pass your parameters to it

then createElementmanually, without jsx, I have never heard babel, why call it manually if babel converts jsx to createElement?

What are cloneElementand used for in practice createElement?