The chart price is history. What you can deal at is a bid and an ask, and the spread between them is a cost you pay on every round trip. Here is what actually happens to your order after you click submit.
The broker you choose determines the cost of every trade, the safety of your capital, the tools you have access to, and the markets you can reach. It is arguably the most consequential decision a trader makes before placing a single order.
Every trade starts with an order. The type of order you choose determines your entry price, your exit price, and whether your risk management plan actually executes when it matters.