Am going to answer this as best I can. Trigger warning for anyone that doesn’t want to read it.
To be clear, a stillbirth is a baby born with no signs of life after 24 weeks gestation. Anything before 24 weeks is classed as a late term miscarriage.If there are any signs of life, and the baby later dies, this is a neonatal death regardless of gestation.
So no, you can’t ‘cause’ a stillbirth, although there are things that can significantly increase your risk factors. For example, despite being a high risk pregnancy women addicted to drugs can have a healthy baby, while women who have a textbook pregnancy / lifestyle can unfortunately have a stillbirth.
If someone needs a medical termination quite far on into their pregnancy (eg 20+ weeks) doctors would usually perform feticide first. It’s an injection through the stomach to stop the babies heart beating - this is the only way to ‘cause’ a baby to die deliberately but that only happens under very very rare circumstances, eg they discover the baby has an anomaly incompatible with life