Normally

2 wins and 1 loss is equivalent to a net profit of 1 game, which is a profit-loss ratio of 1:1

2 wins and 1 loss is equivalent to a net profit of 2X2-1 =3 games, which is a profit-loss ratio of 1:2

If you are only trading a single coin, you can calculate it like this, but if you are trading different altcoins, it is not easy to calculate it like this. Some have big fluctuations, and some have small fluctuations, so you can deliberately control your stop loss area. Within 5-10%.