If you want to delete your account right now, you have to go to the account deactivation page, where you have to enter the number with which you registered your telegram. Remember that deleting Telegram will permanently delete all your messages, groups and contacts.
* Convert regular group to super group
Supergroups are larger groups that can have up to 1000 members, new members are able to view all previous messages, and deleted messages are deleted from all members' phones. To convert a group to a supergroup, go to the Group Info section and click Upgrade to supergroup.
All of these tricks illustrate Telegram's unique capabilities in competing with WhatsApp. Many of them are very interesting and practical and enhance the Telegram experience, so use any of these tricks that you have not tried before.
Telegram has a feature that enables you to completely delete the account after a certain period of time, and this option is located in Settings Privacy and Security. In this section, you can specify the desired time, and after this time, your account will be deleted automatically.
If you do not want the photos and images shared in Telegram to be displayed in the phone gallery, there is a solution for this and you can hide these media. On Android phones, go to Settings and disable Save to Gallery. On iPhones, go to Phone Settings Privacy Photos and disable Telegram.