Private messages can be forwarded by recipients, so they do not necessarily remain private.

The statement  is "True".

In case of today’s social media the primary concern is that of the privacy, though many platforms offer encryption and end to end protection etc but the fact remains true that once you write something and sends it off it can never be un-written; there are multiple issues with that.

this question does't support enough resioning to answer.

answer; 5% is your answer; ///good luck