OP seek a psychiatrist immediately. I'm serious. Not a therapist, not a psychologist (yet). Find a psychiatrist or see your doctor who will likely refer you to a psychiatrist.
They will get you on a starting dose of anti-depressants. Take them. Forget all the stigmas of "being on meds." Forget whatever you heard about anti-depressants being "dangerous" and "turning you into a zombie." It's the opposite. You feel like a zombie now. You're in danger now. Medical treatment, including anti-depressant medication, will turn you around.
It will take up to 2 weeks for the anti-depressants to kick in. The suicidal ideations will stop. The chest wrestling, room pacing panics will stop. The countless hours spent all day locked to the bed waking up in shame or panic will stop. Your negative thoughts will no longer lose control and consume you. You will feel better. You will begin to do the things you love again. You will listen to music again. You will do your art or your writing or whatever you're dreaming of. You will be eager to speak to friends and family again. You will breathe again and you will be alright.
Stay on them for as long as you need them. It could be a few weeks, months, or even years. Stay on them for as long as you feel you need them and stay in touch with your doctor.
After this find a psychotherapist or a psychologist. Any sort of mental health professional for some talk therapy. This is where the work of navigating your life, your troubles, your thoughts, and behaviors, identifying all your subconscious issues, and getting you on track to a healthier view of yourself and your life begins. Start building up a crew of friends and family you truly love and trust to go alongside your mental health team. You may also seek a spiritual community of your choice, yoga, a nutritionist, meditation, mindfulness, art classes, or other mental wellness activities as you go along. Everything to help you navigate this stage in your life and see your brighter path.
But the first stage is to get IMMEDIATE help from a licensed psychiatrist or doctor. Do not wait OP. Do not wait.
You are not weak for getting help. You are not "sick." You are not "evil," "weird" or a "bad guy." You are going through depression. It does not make you weak. Depression is an illness and there is treatment. Going through it and needing extra help does not make you weak. You are not the only one. You are not out of place in this world. You cannot live with or work through any life decisions, changes, or stressful activities while you are in this state. You must get treatment, and you will be okay. You will be okay OP.
Whatever you are carrying, it is not all your fault. You are not all to blame and you are fine. It's not all over. Whatever you think you're going through you will make it through and you will see life as it is again.
Please reach out if you need to talk man.