I am currently struggling with the loss of an important stage in my life I feel like no one understands.

I understand that very well. I found a way to get some emotional support through online here. There are quotes there that help you cope with loss and feel that you are not alone. I read one of them and immediately felt relieved I just realised that it is natural to grieve and that it is normal. You can even save your favourite quotes to come back to them in difficult moments. And although it's a website about relationships, I felt that these words are universal and help with any kind of experience, not just romantic ones.