The fact you think Meta won't hand over your data is sad. If you think they can't save your "encrypted" messages you're delusional. Their business model is selling user's data. You can take it to the bank they have a backdoor built in.
The fact that youre illiterate and you're hallucinating stuff i never said, is sad.
I will address your concern however.
If you think that they are actually not encrypting the message content, then you're a conspiracy theorist. They have thousands of other ways to track the user and give metadata to law enforcement. There is no need for them to lie about protecting the messages, as none of the regular users care about that. They had more than enough users of Messenger even before it was E2EE.