i have an issue when sharing media via Telegram

Not an Apple issue. Apple provides the framework for uploading files. The app developers need to develop an uploader compatible with Apple’s framework.

Contact Telegram support team so they’re aware of the issue and can fix their bug in a future release.

Telegram is not an Apple product. Contact the app developer here --> App Support or Telegram support

Apple is not here, this is a user to user forum.

And as SravanKra pointed out, this is an issue with Telegram not the phone. Ask Telegram for help.

This is not an Apple issue no matter what you might think. Telegram needs to fix their software, not Apple developers.

https://telegram.org/support

Please remember that this is a public forum, so when attaching a screenshot, please avoid including any personal credentials such as IP addresses, card details, email IDs, Apple IDs, IMEI numbers, serial numbers, phone numbers, order IDs, or any identifiable location information if you are sharing a map.