1. Made the specific site chosing better, now it checks if the user's input matches the id of the site, then it proceeds.
2. The input where you put the site number has now been better, added .strip() to remove whitespace which prevents errors from the "Not a valid num" condition print.
3. Removed yasdl due to SSL error, added C1NE, FREEGOGPCGAMES and ZIPERTO.