Anybody that don’t have knowledge about trading can trade but the person will waste money in the process because you will have to start learning, and if you are learning you will waste money, but if you can continue and you don’t give up, you will one day become a professional but it will take time. If you want to trade as a beginner, it’s better you don’t expect profit for now.
If we learn by spending our money then it won't be a waste since we try to get more experience, not everyone has money to start learning or start trading so there are a lot of trading simulators out there or we can learn from our friends/communities to teach us how to trading because friends/communities can guide us before we start to trading so we won't lose in waste.