I use Audible app, but there is a rather high cost.

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audiobooks legally through platforms like Audible Free Listens, LibriVox, and Chirp, covering genres from classics to new releases.
Audible Free Listens
Audible offers a Free Listens section where you can stream or download hundreds of audiobooks, podcasts, and Audible Originals at no cost. No trial or membership is required—just sign in with your Amazon account. The selection includes bestsellers, new releases, celebrity memoirs, and scripted audio dramas,