Higher leverage means less room for error. 1000:1 is not a feature; it accelerates liquidation.
A USD 1,000 account with 1000:1 leverage opening 1 standard lot EUR/USD loses about USD 100 on a 10-pip adverse move.
Retail CFD/FX loss rates are high, so regulators cap leverage.
Use lower leverage, hard stops and always calculate worst case first.