Idk biochemistry? Cell, molecular, structural bio? Genetic engineering? These are all so abstract to me but I wanna head down a path to better understand autoi

Idk biochemistry? Cell, molecular, structural bio? Genetic engineering? These are all so abstract to me but I wanna head down a path to better understand autoimmune diseases, research being done, viable options... Idk but how can I leverage modern day understanding and tech to have an end goal of creating a biologic that makes it so people don’t have to live with their body fighting themselves everyday or give a mother at risk of miscarriages another chance? It’s all such a big messy abstract sound storm in my mind and I wish I could focus it more to ask the right question but unfortunately I can not