Most of what I read is not in English, which is just my second language.

In English, one author I highly recommend reading is James Salter. He had a parsimonious and precise style that, much to my chagrin, went out of fashion when styles of writing either more exuberant or more depressed became the norm.

His "A Sport and a Pastime" is a masterpiece. And his collection of essays "Don't Save Anything" has much to teach those opportunists of limited experience and little reading who sell online writing courses and the like.