To control fear and minimize losses, someone must learn first before getting involved in it.
Thinking of trading by risking luck is a wrong practice because we never know the results.
Trading requires analysis, mastering a clear plan, having management, discipline and knowing how to control emotions, if we don't have this it will be difficult to minimize losses.
Those said are the requirements if we want to have a sustainable trades. If you have that skills and aspects, I believe that you can have a good win to lose ration on your trades, basically you can earn from trading consistently as you have the skills. The thing is those skills are harbored from the experiences and can't be obtained by a newbie trader.
In essence it is much easier said than done so many people find trading is not suitable for everyone.
But when someone is serious about studying, there is nothing difficult because trading can be learned and practiced by using small capital first.
But people don't dare to take risks and prefer to look for a safe point, so investment is the choice of many people.
Yep, most successful traders started small first and has a bunch of fails but the difference between those successful traders and those failed ones is that the successful traders didn't stop even they are losing money and moral to learn to trade.