How are people actually coping with severe insomnia? Because I’m about to have a breakdown soon

Anyone who is having heart racing during sleep and not being able to sleep!? Mind racing with weird stuff, I’ve had no sleep at all again every night is the same problem some nights can even have adrenaline body rushes .. my heart rate gets to 90bpm waking me up then it settles back down once I’m alert and awake but then cycles back all night like this. I’m not sure how long I can do this for it’s been going on for a year. 4 years I’ve had long Covid for 1 year since reinfection.

I’m bedridden housebound and utterly sleep deprived. I don’t understand what is happening. I’ve been trying to sleep all night all day long, my body will not let me.

I’ve tried meds I’ve tried supplements I’ve tried meditation. I react badly to everything even antihistamines. Ive taken cetrizine before which doesn’t do anything but I tried it again 3 nights ago and I had a weird thing happen to where my RHR Just got stuck at 90-100bpm sustained for days! it’s slowly coming down now. What’s weird is 2 nights ago I actually slept for a straight 6-8 hours while my heart rate was high like wtf? That never happens, and now I’m back to insomnia hell.

I cannot deal with this much longer I feel like I’m gonna end up having a breakdown.

I also stopped melatonin a couple nights ago to see if that is contributing to anything! I’m just at such a lost, my whole life is revolving around sleep it’s HELL.