Complex sentence: Eventually, it becomes difficult to pay the bills and Wuornos tries to find legitimate work, but find it difficult because she has no real qualifications, is uncultured, and has a very bad temper, which she often displays during job interviews.
Split into simpler sentences: Eventually, it becomes difficult to pay the bills, so Wuornos tries to find legitimate work. This is not an easy task, as she has no real qualifications, is uncultured, and has a very bad temper, which she often displays during job interviews.