Strongly advise against buying coins on Telegram

I never want to buy coins on Telegram again. I've been scammed twice in a row, luckily without any loss. The first time, they tried to scam me out of a few thousand under the pretext of teaching, but although I'm a minor, my scam awareness is strong enough, so I stopped them. The second time, they tried to give me fake coins or something shady, but I figured it out and blocked them. I don't dare to use Telegram for buying anymore; at most, I'll just chat with foreign friends.