Welcome to the forums! @Nandez
I'm totally hearing you.
I don't have any clinical advice, but I do have personal experiences to share.
I have a diagnosis of BPD. For many years, I lived in a similar state - lost, lonely, empty and feeling worthless. I'm thinking that this is part of the BPD diagnosis?
For me, psychosocial support, such as these forums, were one of the most helpful things in my recovery. I felt less alone because others were able to share similar experiences. Otherwise, I was feeling like I was the issue. I was the issue. I was the faulty one.
Now, I know for surety that BPD is completely treatable.
What supports do you have?