Only invest what you can afford to lose

Well, I guess short-term trading means getting on speed with reading current trends, news and checking the fundamentals before you throw your net and pull in the harvest...whichever you decided to invest in, only invest what you can afford to lose and learn from the lesson. I started with MooMoo and bought shares from reputable firms such as $Apple (AAPL.US)$ $Nike (NKE.US)$ $Advanced Micro Devices (AMD.US)$ but eventually realised I sold them too soon 🤣! who can foresee the future you tell me?