This topic is similar to the one raised by
rachael9385 in
this post with the only difference being that her experience was in Kucoin whereas yours is in Bitget. I think what happened here is that they publish the ads with good offers but during execution, the offers are adjusted. It is a deliberate attempt to scam people because those who did not calculated what they are expected to get will easily continue with the transaction and get under paid.
If you need an exchange for P2P, Bitget is the worst one that you can go to. Do not be lured with high price. If you are looking for a better centralized P2P exchange, there is one that remains among the common ones that I have told you people before but I will no more mention it because I do not know who is reading this post right now but I believe you people will easily understand.
I have had the urge to open account in Bitget but somehow I end up not continuing. Perhaps it is because I had doubt about their reputation even though there was no reason to justify that. It's just a shame what the Nigerian government is making their citizens go through just because they want to control inflation even when the percentage of the citizens using cryptocurrency is still low but rapidly growing.