How is Buddhism different from other ancient religions?

First, Buddhism is not a branch of the Abrahamic religions, that is, Judaism, Christianity, and Islam.
Secondly, many classical Buddhists do not consider Buddhism to be a religion, but speak of it as a kind of ideological and philosophical trend. Buddhism does not believe in the soul and does not have God. Here, unquestioning faith and observance of the sacraments and canons are not required. A Buddhist has a mentor who, in the form of a dialogue or monologue, teaches him personally the art of meditation. Buddhism talks about Nothing and Nirvana.