For 2021, those were the results starting the year with 50k USD, and every trade was 1 ES contract.
However keep in mind that positions are held overnight, so you need to have the initial margin per contract in order to avoid margin calls. 2.5k per MES or 25k per ES doesn't exceed the max historical drawdown for margin calls, but the future can be different so be prepared with additional funding cash if you decide to go with the higher leverage.
Based on max historical drawdowns, the minimum recommended account balance is 5k per MES or 50k per ES contract....
Your calculations are off. Double the buffer right now, and triple it in March before the Fed meeting. Yer gonna' need it. You know how I know? Because I am actually in the shit, and have seen these patterns before.
Stop being so damned liberal on your margin requirements. Or do you just want people to fail in trading?