If you know the group’s "slug" or name but don't have a clickable link, you can manually trigger the Telegram app via your web browser. In your browser's address bar, type followed by the group's name (e.g., t.me/footballsunday Press enter, and a page will appear with a button saying "Open Telegram."
Note on Privacy: To ensure you aren't added to random groups without your consent, go to Settings > Privacy and Security > Groups & Channels and set "Who can add me" to "My Contacts." how+to+join+telegram+group+without+sharing+link+verified
How it works:
Look for the group in the search results under the "Global Search" section. If you know the group’s "slug" or name
You do not need to share a link to join a Telegram group. If an admin tells you they "must" send a link, they are either lazy or uneducated about Telegram’s privacy features. Premium Admin: Creates an invite link that expires