if I start trading with a capital of 50 $ I think it's better to use a cent or mini account and for leverage use 1:50 or 1: 100 if you feel you can't control emotions when trading, if you feel you can control your emotions, use greater leverage.
I suggest opening a cent account to be able to implement a good money management, because the capital is only 50 $ difficult to manage money management.
this is just my opinion