Yes, your trade will always be your own responsibility which is the reason why you should never count fully on the support of other professional traders and even if you want to use them as a guideline, you should be smart enough to understand the market.

Must be able to analyze the market yourself and must know when to be stopping loss incase anything happens and be ready to stick with that so you do not end up getting screwed in a volatile market where the professional is making an exit decision and you are busy holding a market that is falling further.