Which type of trading is safest?

Could you elaborate on the question of "Which type of trading is safest?"? I'm curious to understand which forms of trading carry the least amount of risk. Is it spot trading, futures trading, or perhaps something else? Also, how does one assess the safety of various trading methods? Are there specific criteria or indicators that traders should look out for? Moreover, are there any general strategies or practices that can help mitigate risks in trading? I'm eager to learn more about this topic and would appreciate your insights.