There are many altcoins today, is there any way I can exchange them for free. Changelly charges a lot, other exchange services too. Most of the excahgnes do not have the token I want.
Any service that provides the same?
that is absolutely impossible, there is no exchange that will not charge you with fee. that is how an exchange could live on, without it, they won't have any fund to maintain their sistem that support the market.