And for the altcoins, after buying altcoins, what happens if no one wants to buy them from you? You know a lot of altcoins aren't all that popular so how do people even sell off their altcoins? Can you even hodl altcoins?
if there are no more offers from the market, then that means you are holding a shittoken, since there are no more takers for it. if it is a good token, then there is still interest in the token and you can sell it easily on the exchange/swap platform, it's very simple. so if you want to hodl a token then make sure that the token is a token that has good potential and can be easily exchanged on a swap platform or exchange.