I've been trading in Binance P2P for many years now, I don't encounter such issues. I don't think if it's just in your Country, because here in my place all is well in terms of P2P trading. Binance provided an instruction how to post an ad and they provide the criteria how to become a verified merchant. And because what I'm doing is to withdraw from them, I just need to find an ad. And since your problem is about the bank you're using, try to make up with another banks because afaik there are lot of method to send the payment.
I also used both Binance and Bybit P2P platform and i never faced any problem their. As you said a clear instruction has given their and nothing gone wrong with the platform Binance and Bybit. If he/she faced any problem their may his/her own currency or transaction problem which is not related with P2P platform. So i wanna say it is really smooth for me with every P2P platform i have used.