My question is that, what makes the price go up as people are buying and the price goes down as people are selling because what I understand is that this action cannot increase or reduce the quantity of bitcoin available, so what action actually makes it to increase or reduce in price, is it the marketers, miners or who does that? Is there any technical reason behind that actually?
More clarification on this will be appreciated.
I don't think you'll be able to sustain your income from trading activity in the crypto area based just on what you described regarding the idle learning process in trading skills. Now, if there is a quick spike and decrease in its market price, you are correct; there is a reason for this.
That is why I have emphasized multiple times that most individuals on this community believe it is critical to understand trading. So you can see for yourself which way the price of the cryptocurrency you're dealing on an exchange, whether DEX or CEX, can go.