Key factors include:

• Regulation and security: Ensure the broker is regulated by reputable authorities and offers safeguards like negative balance protection.
• Trading fees: Opt for brokers with competitive spreads and low commissions.
• Asset variety: Look for diverse offerings across cryptocurrencies and other asset classes.
• Platform quality: Test the MT5 platform for speed, user-friendliness, and advanced features.
• Customer support: Check for responsive and professional service.