Yes, that is trading. the moment your goal is to buy low and sell high or switch between Bitcoins and stablecoins based on price movement, you are trading. it doesnt matter that you are not using charts, indicators or leverage. the intent and actions define it. You made a decision to exist and re-enter based on price movement, it is not planned trading but trading nonetheless. You didn't exist because you had a predefined rule, you just exited because the price dropped and you didn't want more loss, many beginners trade this way and its risky long-term.