Investing in stocks has more to do with strategy and money management, it is easy to get sucked into trading when stock markets are in euphoria or try to bail out with stocks are losing ground

Invest sometime in learning about technical /fundament analysis based on what excites you, technical analysis is about chart patterns where traders look for familiar patterns that signal a stock trading higher or lower whereas fundamental analysis is about studying balance sheets/valuations etc.

If this all seems complicated invest in ETFs as they give you the necessary diversification without too much work