I do want to know if it's possible for a starter to gainfully earn from Crypto trading without having to go through a professional training.
I think it is very difficult to earn profits if you don't have sufficient knowledge. You don't need to have professional training, just learn everything about trading yourself. At least, you know how to trade properly. You also need to know how to read price chart patterns & analyze the fundamental aspetcs. If you already understand these things, you may have a good chance to earn profits.
for beginners, learning all of it is indeed important. but the truth is that more beginners want to trade right away with their luck. like having the principle that they just need to buy it cheap and sell it at a higher price. then they must be lucky.
while the knowledge related to the risks that may arise in the crypto market is not yet known to them.