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?
Finding such an exchsnge might be difficult. Even if you will find an exchange where you can withdraw without any charges, ypu will be charged for trade abd vice versa.
According to you, you have many altcoins you want to exchange. I am sure you cannot do all that on one exchange, because there is every likelihood they might not be listed on the same exchange. So you cannot escape the charges you are talking about.