My son was born prematurely and unfortunately passed away

My son was born prematurely at 24 weeks one day gestational age. He fought so hard to develop, breathe, and live. He gave us 11 weeks and unfortunately passed away when he had unforseen complications that arose and ultimately took his life at 35 weeks and one day gestational age. I feel lost, and like a failure as a father. I made this account as a burner to tell people, and the automatic username generated was great_caregiver. Kinda surreal. I just feel like I needed to tell the world I'm drowning in my own head without people I know feeling pitty for me.