Growing up in a larger family can be hard because there’s always a lot going on and lots of personalities to deal with. Being a middle child has it’s own set of challenges as well. However, allegiances and closeness usually shift back and forth over time. So even though it may not seem that your siblings are close to you now, there will be times in the future that they will be.
I’d suggest that you stop trying so hard to get them to like you and just be yourself. Embrace your uniqueness and look for support and friendship outside of the family. Once you are confident and independent your siblings will either seek out your company or you will feel so good about yourself that it won’t matter even if they don’t.
Most of the books I’m familiar with on the subject are written more for parents, such as Siblings Without Rivalry, but you may still glean some tips and understanding by reading it, or a book or article about being a middle child or family birth order.
Be patient and put your energy into enjoying this time of your life.
All the best,
Dr. Holly Counts