About the liquidation price:
In cross-margin mode, lowering the leverage multiplier alone will not move the liquidation price farther away. Reducing your position size or adding funds to your balance will help.
The greater the notional value, the higher the applicable maintenance margin rate. At the same leverage, the liquidation price for a larger position will be closer to the entry price.
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This is just my personal perspective and may not be accurate. Please consider it carefully.