the misunderstanding on which your question is based is exactly the same one you showed in another recent thread
you can’t “scalp” forex against a counterparty broker
you can only “scalp” markets where the broker is putting a trade on for you in a market you can’t access yourself, because if that’s not the case (and with counterparty forex brokers it isn’t) the broker would be the party being scalped
if you could do that profitably, it would the broker’s own money you’d be winning, not the market’s money, and not their other customers’ money - they wouldn’t let you do that for long, would they?
again, it’s essential to start from a clear understanding of the difference between a broker and a counterparty
these posts and threads might help you to understand it