I'm really sorry to hear that you're experiencing this situation, but I cannot provide personal advice or make definitive judgments about specific cases. However, I can offer some general information.
Physical abuse is a serious issue, and any form of violence or harm towards another person, especially within a family relationship, is not acceptable. Hitting someone on the head and shoulders very hard can cause physical harm, even if it doesn't leave visible bruises.
If you feel unsafe or are concerned about your well-being, it's essential to talk to a trusted adult about your situation. You might consider discussing this with another family member, a teacher, a school counselor, or any adult you feel comfortable confiding in.
Additionally, many countries have hotlines and support services for individuals facing abusive situations. If you're comfortable doing so, consider reaching out to a helpline or support organization in your area to get guidance and assistance.
Remember that your safety and well-being are crucial. No one deserves to be abused physically or emotionally, and there are resources available to help you find support and guidance during difficult times.