Active management in general is a poor idea. You'll get better risk adjusted returns by investing in total world equities (like VT). Check out Bogleheads to learn the basics. If you want to get more advanced, you can learn about factor investing as well, but VT is enough for the vast majority.
If you want to get intuition for why this works, this is a really fun and interesting video: https://youtu.be/TQuxVz52w2w
If you want to get intuition for why this works, this is a really fun and interesting video: https://youtu.be/TQuxVz52w2w