I want to design software that: I can enter multiple Telegram accounts, and the software with an invitation link, automatically, in all accounts, start the robot and become a member of the Telegram...

I want to design software that: I can enter multiple Telegram accounts, and the software with an invitation link, automatically, in all accounts, start the robot and become a member of the Telegram channel or group (which the robot wants) Be. It will then automatically send the files (for example, photos and text) that the robot requests to the robot from a user-specified folder.
Now I want to know what programming languages do I have to learn to write this program?