What happens to the stock market if no one wants to buy? When the stock market crashes, if everyone wants to sell, who will buy? Is it possible that  no one could sell his shares because no one wants to buy them?  If so, what would happen? Would share price decrease? Would it drop to zero?
I was told that the company will buy if everyone wants to sell. I don't think that is true.
Yes, price will decrease. If nobody wants to buy at lower prices, sell  orders will push stock prices toward zero.
This is possible in periods of financial turbulence, especially for companies that are very exposed to uncertainty and have do not have positive financial results to show to investors.
If you are interested in exploring this topic, I suggest that you start by reading  about the stock market crash of October 1987.