It is true that money should be used in day-to-day needs to be stable, and I think that bitcoin is great for savings or investments.
wanting bitcoin price to be stable at this point is like wanting a toddler to run in the marathon!
bitcoin is still that toddler who is in its early stages of lifetime. it needs a lot of time and growth before being ready for that marathon and have a stable price. good news is that if you look at the past 9 years you can see that bitcoin has been on the correct path to become more stable and have less volatility and be prepared to be used as a day to day currency.