Complex sentence: Logan, who has aged greatly because his healing factor has begun to falter and the adamantium within his body is now poisoning him, spends his days working as a chauffeur and hustling for prescription drugs in Texas.
Split into simpler sentences: Logan, who has aged greatly because his healing factor has begun to falter and the adamantium within his body is now poisoning him. Logan now spends his days working as a chauffeur and hustling for prescription drugs in Texas.