Depressed and I feel like quitting. You.

My dad passed away in 2012, my mom passed away in april 2021 due to covid. Recently my girlfriend broke up with me. I don't have any brother or sister. My only support system who was left was my girlfriend, now she has broken up with me. I am a software engineer, i am not able to focus on my work since the day of break up. Cannot imagine my life without her I want her back my life, I am feeling depressed lonely and I feel like committing suicide. I have been crying for 3 days now. I haven't eaten anything I have fever, their is no one to support me. After my mom passed away she was the only one who took take of me, I was living in this world for her. She is my world my love my everything and more I can do anything for her, cannot live without her. I am dead internally only breathing. I only wish is to get her back in my life I love her and I want to marry her. I am sorry for everything I did to her and apologize from deep of my heart. Please come back I love you.