best qualities in broker when we choose?

Jab ap koi be broker daikhty hain tu ap ko us mai aik cheez daikni hoti hai kay trading mai jo ap trade karty hain us mai ap ki kon kon c requirement puri ho rahi hai jis sy ap ko bad mai faida hasil ho sakta hai. es kay leye ap ko cheye kay kay ap jab tak apni requirement kay mutabiq broker ko daikhty hain ap ko sub cheezain like spread,major pairs, leverage, lot size, etc sub daikhty hain tu ap ko faida hasil ho sakta hai.