First, I suggest, do not comment on topics that are self-made, let alone there is no comment on your topic, you can enter the spam category,
and if you want to add an explanation of your topic, you can add it in the edit menu, not in the reply menu.
I hope this helps.
And for how to make good predictions, we must have adequate knowledge about it, the active community we follow is also influential. for example we want to guess the price of ETH, then we must understand about ETH, the latest news about ETH, the community that supports ETH and so on.