How To Backup Data In Telegram

Bhai telegram PE meri ek chat delete ho gai usme bhut kuch jaruri tha Bhai meri help kardo usko recover karne me kya ye method use krne se vapas a jaygi chat please help me bhaiya😭😭😭😭

I m trying to save a copy of my telegram chat messages… so I followed the step. Am i done. How do i retrieve?

And how long going to take to get back up back

thank you.