The stock market is a giant, legal casino. Just like how players at a casino always end up losing money, 90% of people who trade stocks will lose money at the end of the day. The reason is simple: they dive headfirst with no plan, no strategy.
Bulls make money, bears make money, pigs get slaughtered.
Do what one knows is best and to do it gladly.
You cannot expect to jump into the market anytime and reap gains out of it. Buy stocks that you will feel comfortable holding. The lesson here is to take some time and invest in self-education. You as a trader analyze from your own perspective and learn new perspectives. Trade with 100 shares or less until you understand how this part of the stock market works.
Good luck and safe trading