In many groups, especially smaller ones, you can be added manually by someone already in the group without any link exchange.
Keep in mind that these methods might not work for all groups, as group administrators can limit the ways users can join their group. how to join telegram group without sharing link
You cannot use this method unless the group admin has set up such a bot. In many groups, especially smaller ones, you can
allows you to search for groups by keyword rather than needing a specific link. Manual Admin Addition In many groups
For this to work, your privacy settings must allow it. Go to Telegram Settings > Privacy & Security > Groups & Channels . Ensure it is set to “Everybody” or at least “My Contacts” (if the inviter is a contact).