You make a deposit and trade with a lager amount of money. You as a trader have a profitable strategy and make many trades per week.
Broker executes your trades and takes his interest.
More trades - more profit - more interest for the broker.
Lose-Win
You have a micro account and trade with a small amount of money. Broker is a market maker for you. You make a profit - broker pays you from his pocket. You lose - he gains.
In this case broker very interesting in you to have a non-profitable system.
More accounts - more loses - more income for the broker.
Are you 100% sure and have a lot of opinions. Cause I heard not only from one person FXopen isn’t good. Personally haven’t try it so have nothing to say just share rumors.
FXpro is good but they do not accept US customers , don’t know why.