For trust issues, it all depends on the copy trading platform that will be used. Because if the copy trading platform is indeed trusted and has a very good reputation, in general a copy trading platform like that can be said to be trusted.
People trust and believe in all the copy trading that exists today. Most of the people now follow these platforms and start trading so that they don't face losses. But I think it can be a good sign for the purpose of profit but very bad if copy trading is basically facing loss. I think it's best to start trading later by using your own experience rather than copy trading. Because most of the times we have seen wrong advices from many platforms and people face lot of loss due to it so it is best to trade with your own knowledge. Since traders today believe in copy trading to make more money in a shorter period of time, it is difficult to say how certain it will be in the future.
Be it normal trading, be it day trading, be it copy trading or is it bot trading, there is a certain amount of losses and gains in the above types of trading. What differentiate it is the frequency of the losses and that of the profits. If someone is trading without any help and making good profits, it is better than someone who is using copy trading strategy and losing money.
It is not everyone that knows how to trade, that is why we have all these signal groups to help people. I will advise that if anyone should use signal group, at least they should know how the market is moving so that when things are going wrong, they will be able to decipher and make independent decisions.