I am not a particular fan of Cohen’s music, but as far as humans go, I think he led a fascinating life. He was a poet, a novelist, a singer/songwriter … and he found success (and failure) multiple times at very different stages of his life.
I recently watched “Hallelujah: Leonard Cohen, a Journey, a Song” (2022), and would recommend it as a starting place to anyone who’s at least vaguely familiar with the titular song.