Double lot = double profit or double loss. You cannot say that increasing lot size means increasing profits. You can add to the loss with this technique. So I suggest all new traders not to use large lot sizes. If the lot size is large, there is a greater risk. One cannot take such risks. One can open more trades using small lot sizes. But if a trader has large capital, he can use a large lot size because there is a low risk. and lot size is very large = big profit / big loss, so traders must always remember that this is a bad practice to expect to switch from fabric to wealth, trade in low lot size and be a winner.