Where does your trade get liquidated? Put it in once and see the price on Hyperliquid, Binance, Bybit and OKX, side by side, each worked out from that exchange's own margin tiers. How far it is from your entry, and the tier that sets it.
Isolated margin. Your exchange's own liquidation price is the exact one: fees you paid, funding and margin you add move it a little.
Cross margin uses your whole account's balance, so only isolated positions are worked out here. Not financial advice.