Discussion: I am a 13-year-old girl with type 1 diabetes who injects insulin every day. I do not understand why I have such bad luck?

I participate in your sense of loss, but there is no luck here. The Human Body never acts randomly. Well-known physicist Albert Einstein said (in another context) that God does not play dice! (luck) Autoimmune disease at such a young age must turn the spotlight toward unresolved mental traumas. You will find the explanation for the phenomenon in the article that discusses the Subconscious. Because the Subconscious is a mechanism of repression, even if you have not forgotten the event, it will not consciously cite you as problematic.

Links:
The Subconscious is the bridge that connects the Mind to the Body, making it Spiritual.
https://www.sf-healing.com/page/139 (Copy & Paste)

Type 1 Diabetes – Pancreas and Immune Recovery.
https://www.sf-healing.com/page/190 (Copy & Paste)