It all depends on how you comply with the risks. If you trade a small lot according to the rules of money management, then your margin level will be high and will give you the opportunity to make even several trades at the same time. And if the lot in the transaction is large, then the margin will instantly decrease, and if you made an incorrect entry, then after even a small number of points of price movement against your order, you can lose your deposit. Therefore, it is better to set a small leverage and trade with small lots.