This knowledge will increase along with the existing experience, the more experience we have, the more knowledge we get, as well as investment, the more often we invest, the more mature we are in managing it, but basic knowledge about investment must be present, so that we don't invest based solely on forecasts or listen to what people have to say.
In terms of investment, it must always be based on conclusions and decisions that we make personally, because other people's opinions can also not be fully relied upon even though they also say the right things, because good learning is when you are taught by other people for real.