Bank transfer with banks that ban crypto exchanges?

so my bank doesnt allow me to purchase from any echanges like kraken, binance etc but surely buying from a broker on here will be fine? like its not going to a exchange just to somebodys bank account.
has anybody got experience with this please? i really cant afford for payment to get froze, im sure im being paranoid but if anybody has bought on here with a branch that isnt rbs or natwest can you please let me know, thank you.

You can cooperate with a sincere merchant with high reputation. If you are worried about freezing, you can choose cash transaction