It is never possible to trade without risk the main task of a successful businessman is to take risks and achieve success. It is much easier to avoid risk if you know the market well and know the business strategies need to move forward efficiently and start with less capital.
To trade, you must take risks, but the most important thing is how you deal with those risks. You can't ignore the risk of trading, but you can reduce it with proper risk management. So risk management is important in trading.
I did not use stop loss for my crypto trading activity, because I did long term trading , but for risk management I prefer to do diversification of investment. Im not only make invest on crypto but also on stocks, commodities and forex. At the moment I been loss at crypto, but I was made good profit from stocks and forex.
Longterm investment is certainly a good decision, but it is also important to note the market conditions before making long-term investments. I also often do not use stoploss for longterm investments, but I do use stoploss in shortterm trades to save my fund from sudden losses. So risk management has to be used when the trader goes to trade.