What currency and futures products have you already traded since your first trade? What year was your first trade?
My first highly leveraged trade involving a significant amount of money was 2019. I've already done leveraged ETFs, commodity futures, options spreads (involving little money), major currency pairs.
If you Knew that you were going to take a futures trade that had current margin requirements of max $1800 USD per contract. No reason to tell us online, but would you have a way to come up with a number for How many contracts max would you feel good about stepping into? Do it now. Write it down where you can find it later. At $5 per tick, How many ticks would you be prepared to stop out with if the trade went against you? Do it now. Write it down where you can find it later.
When I get a margin call I can't afford Hahaha Wish I was joking. But if I ever was winning... I would eyeball it based on the range I predicted it going to.