In fact, the crypto currency market is always unpredictable, so your skills should be more important here. See with common sense if you buy a meme coin or bad altcoins it will put you in a killing spree. So to start trading you need to be patient and practice a lot as well as start trading with small money. It is normal that you will lose some trades but once you become skilled you will always win.
I dont really think theres a world where you always win. Even if your the most skilled person in the business. Its all about how much loss you can actually afford and how you manage them,