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No. Only certain ones. XD

Although Latin is the language of the church it is not a requirement to know how to speak it fluently, it is recommended to learn small amounts or more because people often use Latin during mass

There is no debate, strictly speaking; pius x regularized the Italian Latin pronunciation (what today is known as ecclesiastical) in the beginning of the 20th C. Not sure if the legislation is still in effect; I'm sure it's been countermanded at some point. You can pronounce it however you like; it's like asking about the British vs. American pronunciation.

no, my church is trying to go back to the original ways of the latin mass and sometimes i dont understand what they are saying