Hello everyone, I would like to ask you how to become a stable profit trader, what aspects should be learned from it, I have read some books, such as price behavior, but still at a loss in the real market

And you think that is enough to keep you winning or profiting for long time and regularly? You must expand your reading to other areas of trading, which includes how price actions, risk Management, and more importantly study the coin you are to trade it's very essential if not for btcusdt then any altcoin should be carefully monitored before entering trade otherwise you could be rugged pool.