All of them are scams! If some professional trader has the capability to trade and earn a good amount of money every single day/month, why he would need other people's money? This is the first thing to understand. The behavior is very similar to ponzi schemes and must be avoided by all means.
You have responded very nicely. But what I want you to know is that some crypto experts are good entrepreneurs that always want to scale any business with innovative business models.
In this case, the trader may consider that to achieve high volume of trade then he needs other people's money which at the end of the day people will earn and he will make huge profit.
Its about scaling an idea or a business...
Same thoughts, if someone is asking money and will help you in trading that he will give you huge amount of profit, never trust, easily. If you really know how to appraise people then you will not got baited bu those scammers that are only fooling people just to earn money. Don't give your money to other people easily because there are really a fraud people that will only scam you.
Sometimes all you have to do is to work on your own in trading, work on your own investment and only ask for some advice and not help from other people. Learn about trading and investment using your curiosity and urge in learning a lot. There's no limit in learning and having experience in trading that's why it is not guaranteed for you to seek help if it is not necessary.
Making huge profit doesn't require you to have another person to guide you, you can do it by yourself, you can earn huge profit with only yourself, you just need to work for it and proper management of your investments.