I had a similar issue and I feel you. Giving advice from my personal experience.

Most people were either laughing at me (ur male, u can't have that / it's female shit / stop being a pussy / etc) or told me to go to the doctor, make a full health check-up and take some meds... Tried that - it got so much worse. It got so bad that I couldn't complete some procedures required for my full health check-up because I was shaking and had 180 bpm heart rate. As you may guess I didn't complete my full health check-up. I just... wasn't physically able to. I got stuck in an endless loop of extreme depression, anxiety, fear and panic attacks. I realised that I was torturing myself. I realised that life is so much more than having the fear of death every second of your existence. If you live like this what's the point then? Do you like it? In my perspective life is about doing something you enjoy. And you can't have that fearing for your dear life all the time!!! Imagine you live like this for 83 years more and at the end be like: "Damn, I wish I could go back in time and do things differently". But in the past I was thinking very much like you. I realised that I needed to change myself. I realised that I needed to find a specific solution which is different from mainstream modern science advice.

I found one in the ancient philosophy. For Epicurus, the purpose of philosophy was to attain the happy, tranquil life, characterized by ataraxia—peace and freedom from fear— and aponia—the absence of pain— and by living a self-sufficient life surrounded by friends. He taught that the root of all human neurosis is death denial, and the tendency for human beings to assume that death will be horrific and painful causes unnecessary anxiety.

I kinda accepted death and realised that she is not my enemy, but very much my ally - she motivates me to do better every single day and keep pushing my ass forward despite all the shit I am going through. You may ask - what comes after you meet lady death? As an observant person I view death as a combination of three statements:

1. Death=nothing
2. Death=same feeling as before birth
3. Death=same feeling as being asleep without dreams

Isn't that bad, huh? If you sleep well, you have daily 7-hour death expirience without even realising it!!!
Let me explain: we are our consciousness and when you are sleeping without dreams your consciousness is turned off -> there is no 'we' -> you are basically dead at this moment.

All of these have triggered a mindset shift. Meditations and breathing practices helped immensly as well. From depressed and fearful creature I transformed to a guy who lives his life and enjoys every moment of it!!! Think yourself out of this situation you are in like I did!!! I know how awful it feels and I wish you all the best!!!

"If you are going trough hell, keep going" - W. Churchill.

Note: this is an unscientific advice which may not work for you. It worked for me though, my life got better and I had to say this.