Twitter is an online news and social networking service on which users interact with messages known as “tweets”. This is not to be confused with the Direct Message which is private and can only be seen by the two people involved unless someone screenshots it.
Tweets, on the other hand, can be seen by everyone, except your account is locked then only your followers will be able to see your tweets. There are so many reasons why someone would want to delete all tweets he or she has ever tweeted.
Guys The full Step by Step Instruction is here on the Website.
https://techlector.com/how-to-delete-all-tweets-on-twitter/