This is one of the issues that I do face. So this can be handled in a few ways that I will list.
1) If you are near a support level, then using 2 contracts is beneficial. Have one go to a standard target or resistance if going long, and 2nd contract can go to a higher target or resistance level.
2) While this will lower your overall win ratio, especially in volatile markets look for a 2 to 1 reward vs risk, or just select a much higher target. So yes, you run the risk of price going your way for a bit then reversing and taking out your stop, but if this is your overall strategy, you just need a 40 - 50% win ratio and can just trade 1 contract.
3) A break out or higher win% strategy can just have a risk equal to reward which did work in my forex system which was #1 out of 9,000 systems for over a year due to a 65% win ratio. So in this case you don't care about missing out on extra return since you are getting paid by either your investors or subscribers to trade for them and your Sharpe ratio plus overall draw down over time is statistically better than all other systems out there. Yes, some systems will have a 90% win ratio, but they will be hiding a losing trade that eventually wipes out their account.
Truthfully, sometimes it just looks like when I trade price is only going to go to the 1st resistance if long or 1st support if short, and I don't want to risk 2 contracts if I am not in the zone with reading price action or TA setups for the right side of the screen.
Also, my main problem recently is for some reason taking a loss on a day of the week after having multiple winning days. Instead of just taking the loss and quitting for the day, I start to over or revenge trade and make a much bigger loss compared to days I have winning trades. The reason my forex system worked so well, is it just traded over night while I slept so I would wake up to a win or loss and not be able to revenge trade.