In the first place, the price of Bitcoin is volatile thats why we cannot predict the price if it goes down or rises. But one thing we know is that, unless there are investors and investments in Bitcoin, it will stay on track. Investors are also one of the main reasons why there are ups and downs. When investors sell their assets and others follow when there is a dump and vice versa
Yes it is true, the investors had a big role why bitcoin goes up and down. If there are demands on bitcoin the price will go up but if no demands then the price will go down.