Set "Who can see my phone number" to Nobody or My Contacts .
If you encounter a download link for "Telegram_csv.rar," proceed with extreme caution. Files shared this way frequently carry security risks:
Unique numerical identifiers for Telegram accounts.
Limit visibility to contacts to prevent automated scraping of your likeness.
Possessing or distributing scraped personal data may violate privacy laws like the GDPR depending on your jurisdiction. How to Protect Your Account
БД ASL - Statistics & analytics of Telegram channel - Telemetr.io
To prevent your data from appearing in future versions of these "csv.rar" files, adjust your Telegram Privacy Settings:
Often linked to the account if the user's privacy settings were lax. Usernames: Publicly searchable handles. First and Last Names: As provided by the user. Why It Exists and How It Is Used