Bitcoin price is determined by the few whales who happened to hold since the early days. If they want they can pump BTC to 1M $ and if they want they can dump BTC to 100$.
Doesnt matter who you are, A BTC holder or a daily trader, whales control BTC price.
What I mean by whale? The person who have more than million Bitcoin.
Bitcoin technology is great but Market is compeletly different story.
It is a known fact that there are large players with a dominant number of coins. However, so far I have not seen any manipulations that would destroy the crypto market. It is still alive so dont worry