Qwert, it’s a lot more than that. Gemara is the only way to reach the depth of chochmah elokis, of Hashem’s wisdom; it’s all in chumash ultimately, as the Gra writes in shir hashirim(and he used fo learn straight from a sefer torah in his final years without a gemara), but the only way we can access it is through sugyos hashas b’iyun.
Gemara connects a person to learning more than any other limud. It is in it that one can learn what a sevara is, how to think like Hashem on our level, who put His essence in the Torah, as chazal say that anochi Hashem stands for “ana nafshai kesavis yehavis,” i am writing and giving my soul to you,”
More than just training you to think truthfully.