As you already said, supply and demand determine a value.
Currently, a lot of money is flowing away from the BTC, so the price drops.

It always is supply and demand.
values of any currencies will drop when investors pull away their investments.
In the case of bitcoin presently, many bitcoin holders exchanged their money for something else. Thus, money flows out from BTC, and in turn, the drop in value

many factors determine the bitcoin price position, it depends on the sellers and buyers who are influenced by external factors such as the issue isus that support or drop the bitcoin price

the value of bitcoin is governed by the law of supply and demand, which basically states that in a fix supply market, as the demand for a product increases, its price also increase. as  as we all know, bitcoin has a fix number of around 21 million, and the recent price increase led many to venture into bitcoin increasing demand pushing it further upward.

it is like commerce, the price of btc is determined by the supply and demand which already mentioned on your question. It depends on the demand of buyer, when there are so many demand surely the rice of btc is increase.

It's always in supply and demand. If the price hike the traders sell their stocks that why sudden dip happen. When the price dip some try to hold it to avoid loses then the price will hike again. If you plan to trade better to study first the behavior of the market otherwise you will end up losing your money.

i'm not an expert  but,,
Bitcoin also has its market where it is bought and sold. Therefore, demand & supply or surplus & deficit in the market determines its value.

You should know the latest information about the world of cryptocurrency, especially bitcoin. If it comes bad information, FUD and the decision of a country to ban bitcoin it will make the bitcoin price go down. On the other hand, if many countries accept bitcoin as a means of transaction and a lot of positive news or information about bitcoin then certainly bitcoin price will go up. So, I feel that's affects the supply and demand for bitcoin.

Actually, the decline bitcoin prices can be overcome, if the investors aren't affected by some news that comes against bitcoin. For example, a FUD or a country will ban bitcoin, but investors don't use panic sell, but they just hodl their bitcoin I'm sure bitcoin price not go down.

Yes, I am really a newbie. What I'm most concerned with is the question you are asking. I have heard about the supply and demand but I do not understand because of it.
I need to know more about the problem to have a solid knowledge. In the future, I want to invest in the altcoins to make more profit so I really need to know about the basics. Hope everyone will sincerely help me and give me advice.

I agree with you here. The reason why the crypto world is extremely volatile in the first place(More volatile than the stock and forex markets) is due to the minds of people which get swayed easily for different reasons like FUD(Example: Recent South Korea Ban on crypto exchanges). People tend to trust bitcoin over other altcoins majority of the time though due to its popularity and value in the modern world today. Supply and demand is indeed the primary indicator of bitcoin value, but there are many reasons like real world events, FUD etc which tend to affect bitcoin in a small or big way!