Can a bad forex broker ruin a profitable strategy?

Yes, poor execution, manipulated quotes, re‑quotes, or withdrawal blocks can destroy edge even from solid strategies. Wide spreads eat profits incrementally; slippage compounds on scalps. Platform crashes during volatility trap positions. Forced closures from margin glitches add losses. Unreliable support delays fixes. A great strategy assumes fair conditions—bad brokers break that foundation. Profitable traders prioritize execution quality over marketing hype. Test live with small sizes first. One bad broker experience teaches more than theory.