How did the Carthaginians pronounce it?

ChatGPT says /malik/, but that is irrelevant since the English word comes from the Latin “Moloch”.

What sound is the "ch" digraph intended to represent in the Latin spelling? If it's /k/ wouldn't they have written it "c" or "k"? My understanding is the name comes form the Hebrew (מולך) in the masoretic text.

⟨ch⟩ was used to transliterate Greek ⟨χ⟩ and was pronounced [kʰ] in classical Latin, but might have become [k] by the time Μολόχ was first transliterated.