You are doing it wrong. Buying bitcoin should be a reasoned, calm, long-term decision in most cases, and not be influenced by short-term volatility swings.

This is not your case, but someone who buys bitcoin with this mentality does not care if he buys and the price goes down, because he has assumed the volatility and thinks about what will happen in 10 years' time, not what will happen to the price in the next 10 hours.

In response to the title of your thread, I would say that you should not share bitcoin, at least until you become more informed and change your mindset. You have all the chances to buy with money that you may need in the short term, which you should not do, and sell at a loss as soon as it drops a little, which is typical of inexperienced retail investors who get carried away by emotions.