Diyana, that is the GitHub link of JoinMarket… try to start from there but the implementation is not so straightforward if you are not a bit technical…
There is JAM that is a nice easy interface to use it but you have to deploy a full node, JoinMarket and JAM.
Probably the easiest way is to use nostr:npub126ntw5mnermmj0znhjhgdk8lh2af72sm8qfzq48umdlnhaj9kuns3le9ll OS that gives a full node, JoinMarket, JAM and many other services: