Hello. This is not an issue for a philosopher, nor for a stranger on the other side of your computer screen. An addiction is a complex social and medical issue that must be addressed by appropriate professionals. Please voice your concerns to your friend, their immediate family and to a reliable professional party who is able to provide help, such as a doctor, a counsellor or possibly a local treatment centre. I advice you to contact a local helpline and discuss the situation with them immediately; they will be able to provide you information on what you can do and who you can contact. I wish you and your friend all the best.
Hello hello, I especially enjoy logic and philosophy of language and political philosophy (and ethics, and epistemology, and, there isn’t really anything I don’t like).