Complex sentence: His hard exterior stems in part from the type work he's doing, and also from the rough experiences he's been through, losing friends, partners, and other people he's been close to or otherwise deeply cares about.
Split into simpler sentences: His hard exterior stems in part from the of type work he's doing, and also from rough experiences in his past. Losing friends, partners, and other people he's been close to or otherwise deeply cares about.