If you managed to do it, can you please tell me how. I want to spread the message.
https://www.facebook.com/help/contact/6359191084165019
https://help.instagram.com/contact/233964459562201
As for what to put inside the objection form, you can say something like:
> I do not consent to the use of my data for AI training, improvement, or personalized services.
and in the additional information box, you can put something like:
> If my objection is not honored, I will cease using all Meta products indefinitely.
There should be absolutely no reason for Meta not to honor your request.
https://noyb.eu/en/noyb-urges-11-dpas-immediately-stop-metas...
The only way to be sure is to not use their products.