It is difficult to identify a skilled trader and copy their trades, even the best in the crypto market cannot be sure of their deals.
A newcomer with a small amount of capital is very likely to lose all their assets trying to copy the deals of big traders.
First, you need to use special platforms in order to avoid typical mistakes due to inexperience.
Secondly, in order to understand how experienced a trader is, it is enough to look at the complete and transparent statistics to make it over a long period.
If the platform provides such functionality, it can be trusted, as well as a trader. However, I have not seen traders providing their copy trading services with positive long-term statistics.