Not only manipulation, but unfavorable news can also influence it and everything cannot be avoided, and that is the law of economics, where the big ones will be able to arrange everything for interests that can be profitable. But it must be remembered that the market also plays an active role in being able to break everything if done together and simultaneously.
But if countries cannot accept bitcoin, it is more because regulations do not yet exist and cannot control it, because bitcoin cannot be intervened by institutions, because it moves due to trade.
And this is the government's consideration for not allowing bitcoin as a payment method, because bitcoin cannot be controlled.
and as you said whales can manipulate the market with news, if they intend to make the market fall by spreading bad news, and vice versa
That's right, with the government not having the ability to control Bitcoin, of course,. is very fearful that if a problem occurs, the state will also be the one to bear everything, because it has wrongly implemented the rules it has made. So it's not easy to accept bitcoins to be used or recognized as legal payment. Maybe it doesn't prohibit trading, but if you want to use it, you have to use money that is legal and recognized by the government by exchanging it first.
Bitcoin is very vulnerable to information that occurs at any time and can change with the situation, even though trading is something that can make a direct contribution to Bitcoin.