My friend loves opening different trades at a time, most at times is difficult for him to control what's should be. Trading on free chart with multiple opening can be very dangerous. Yesterday he experience unusual hit when bitcoin price drops again, four trades loss at once when the market go against him. Personally I don't advise multiple trade especially when you're not familiar with trade
You mean multiple orders in one pair, yes it could be that possible but something that adds more risks into your entire capital considering you would really be having those huge losses.
Somewhat it would really be varying if you are neither dealing with Spot or futures which we know that on spot where you could really still able to hold up your negative position
unlike on futures which once your account been liquidated then there's no way on getting it back.
One position would be enough but since you do make out some multiple then you are really that somewhat sure in regarding into your position.