Answer
In the Settings menu, go to Security & Privacy and then Account. Select Deactivate my account from the drop-down menu at the bottom of the screen. Twitter will ask you to confirm your decision by entering your password. Yes, you do, so click it and you’re done.
How to Permanently Delete Your Twitter Account
How to Delete Your Twitter Account Permanently
Choose Deactivate Account from the drop-down menu. Select Settings and privacy from the three-dot menu on the left side of your page. Select Deactivate your account. Read through all of the details and then select Deactivate.
After you cancel your account, all of your tweets, likes, and comments will be removed from the site for up to 30 days. Depending on how active your Twitter presence was before you deactivated it, this procedure may take minutes or a few days.
Go to Twitter and sign in. On the top right corner, click your profile icon. From the drop-down menu, choose Settings & Privacy. Scroll all the way down and hit Deactivate your account.
When you cancel a tweet, it is removed from your account, the timelines of all accounts that follow you, and search results on twitter.com, Twitter for iOS, and Twitter for Android. On twitter.com, Twitter for iOS, and Twitter for Android, retweets of the deleted statement will be cancelled as well.
If you’re ready to quit using a social media app, you can cancel your account on the Twitter website or mobile app for iPhone or Android. You may also choose to keep your username and email address so that you may establish a new account with them.
You can’t find a deleted tweet on Twitter. The only way to see the message is if someone has taken pictures or if the article remains in search engine data (which may be the case with viral/famous tweets).