Price and Usage are phenoms that can influence the volatility of Bitcoin
For sure, i.e. when BTC price drops, weak hands start to sell their BTC's, and this cause the price to drop even further, that is why a lot of people believe that with fewer weak hands, there would be lesser volatility. Take note that these weak hands are also the ones caught in the fomo rush when the price starts to rise again as they rush to buy the coins they sold.
However, as for BTC usage, it can mean a lot of things based on BTC's use cases, i.e. it could be holding BTC, spending BTC, setting up BTC strategic reserve, buying BTC shares through etf, etc. Demand or adoption obviously influences BTC price movement, since we already have a capped supply, a high demand would move the price upward.
Weak hands will always exist because people will always have reasons to sell their Bitcoin. There will always be new entrants to the market that will ignorantly dump coin into the market.
Bitcoin awareness will increase adoption, which ultimately leads to an increase or decrease in price. Bitcoin use could be a huge dump which would affect the price adversely.