Is regulations among the key factors that affects the price of Bitcoin
Yes, it can influence. Because with regulations imposed by a community or a government in a country, usually this will definitely affect the bitcoin market price. Moreover, the regulations are made by big countries, such as the United States and China. Surely that way bitcoin price movements will be affected. Why does this have an effect? that's because all of that relates to what is called supply and demand in the bitcoin market. Because if for example in a country, bitcoin is strictly prohibited from being used as an investment asset for the people, even though before the regulation was in place, many people in that country invested in bitcoin. But with the existence of prohibition regulations in that country, people are forced to stop investing in bitcoin and for example sell all their assets.
Now, it is clear that the price of bitcoin will most likely go down, because many people are selling bitcoin assets in that country (example). Then suppose for positive regulations about bitcoin, such as a country that adopts bitcoin as a payment system, for example el Salvador. With these regulations, it is likely that the price of bitcoin will increase.
So in that way it is certain, that a regulation will indeed affect the bitcoin market price. Because we cannot deny that we all live in a rule. Whether it's government regulations or regulations from other things. And so is bitcoin, in every country, there must be different regulations, even though most of them are almost the same.