How does bitcoin increase and decrease

The value of cryptocurrency is determined by supply and demand, just like anything else that people want. If demand increases faster than supply, the price goes up. For example, if there’s a drought, the price of grain and produce increases if demand doesn’t change.

What causes a cryptocurrency to increase in value?

Cryptocurrency gains value if the demand for it is higher than the supply. When a cryptocurrency is useful, people want to own more of it, driving up the demand. Since people want to use it, they don’t want to sell it. This means there is more demand than supply and the value increases.