Complex sentence: During his lifetime, Joel Pettersson did not receive much appreciation for his works; he did not write in formal Swedish but relied heavily on the vocabulary of the local dialect, and publishers had little interest in publishing Joel's texts.
Split into simpler sentences: During his lifetime, Pettersson did not receive much appreciation for his works. He did not write in formal Swedish but relied heavily on the vocabulary of the local dialect, and publishers had little interest in publishing Joel's texts.