Why is the ICO price always different when entering the exchange market? whereas when the ICO price before entering the exchange was very promising. What exactly happened?

In my opinion, if you want to get an altcoin every day, the easiest way is to trade. But we must have large capital. With trading we can make short-term investments with the method of buy and sell.

If I prefer to buy Litecoin, the reason is that Litecoin is also potentially profitable, even though it takes a long time

At present all the people who are struggling in the cryptocurrency world are feeling worried, because the market is unpredictable, prices on the market are up and down but there is no significant certainty. We can only hope that before the end of the year the market will rise again.

I will hold it back, when prices go up in the market I will sell it.

It's very difficult to determine whether it's a scam or not. Even if they hire a good manager bounty.
But maybe the difference is if we follow the campaign with managers who have good competence,
they always give an announcement if it turns out the project is a scam

Then what really happens if the ICO price becomes not in accordance with what has been determined by the project itself,
other than the information above?