ah right, I think that might be what is "Telegram Lite" on the App Store

These are the two options I see to download https://i.ritzastatic.com/static/1e133ef5057a949b7ddd92e5668...

And the 'main' one that I usually use doesn't have export settings that I can find

https://i.ritzastatic.com/static/18db23448a373338766bf419fa0...