Man, you need to put a lot of learning on this, it would take days in order for you to understand the big picture what I can only suggest is keep on reading the good threads here and surf the net regarding that.
Also the trends in the price of bitcoin is the same as the stock markets.

The important things to grasp about this subject are the following:

1. At the most fundamental level, supply and demand in the market determine stock price.

2. Price times the number of shares outstanding (market capitalization) is the value of a company. Comparing just the share price of two companies is meaningless.

3. Theoretically earnings are what affect investors' valuation of a company, but there are other indicators that investors use to predict stock price. Remember, it is investors' sentiments, attitudes, and expectations that ultimately affect stock prices.

4. There are many theories that try to explain the way stock prices move the way they do. Unfortunately, there is no one theory that can explain everything.

Source : https://www.disnat.com/en/learning/trading-basics/stock-basics/what-causes-stock-prices-to-change