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?
If they are not listed on exchange, the only way is to search for that token's community. And P2P transactions with them, it is quite dangerous because no one intermediates to ensure safe transactions between you and the buyer