Hi this is a collection of some useful telegram scripts which include leaving all telegram channels at once or maybe deleting all chats from telegram at once
Youtube Tutorial :) for deleting leaving groups at once - https://www.youtube.com/watch?v=FatSBowwg7E
u need a python compatible compiler , api id api hash generated uniquely to your account and that's it lastly there is command u need to run in terminal - pip install telethon
hope it helps