I have checked the TXID and its correct and same address so then it would be the exchange itself?but why would a large exchange like bybit do that?
Can you check the TXID on explorer if its confirmed or not?
And why not tell exactly which BTC token your friend talking about?
Maybe your friend sent BTC token to a deposit BTC address in Bybit if I'm right, then it won't show up in your friend's Bybit account because you sent a BRC20 token into the BTC address. That's not Bybit's fault if you sent a coin or token to the wrong address.
If that's the case, only Bybit can help you with your case.
I may be wrong but this is what I think the issue is. To be clear, why not share the TXID here? Let's see what token you and your friend talk about.