I'm so sorry, I know that has to feel awful for you.
You probably already know all this below, and apologies if it seems simplistic, but I was one of those people that didn't realize the whole shares/pricing thing at the beginning so I feel obligated to explain it. It should be a "duh" kind of thing... but I never assume that now. ;)
This is normal and is supposed to happen - usually it happens more regularly but we had a longer than normal high/good run, so it's even more difficult to deal with for those that are now paying attention or experiencing it for the 1st time.
Your shares are still exactly the same as what you bought, they're just worth less than what you paid... for now.
Consider you just bought a grove of fruit trees but it's right after a frost so you lost your first crop of fruit. You still have the grove, but it's going to take a little while to harvest the fruit again and as long as you don't bulldoze the trees in a panic thinking "well, I could sell the wood!" - things will come back.
Don't give up, don't throw in the towel, and don't panic. Bad luck on the timing, but it will all work out given MORE time. Luck - good or bad - is technically not as important as being calm and patient. Even people with terrible timing make money if you wait long enough.
https://awealthofcommonsense.com/2014/02/worlds-worst-market-timer/Keep planting new trees, and the existing ones there will start producing fruit again, and you'll have a lovely new $$ grove even better than it was when you first started eventually.
This totally sucks, and will suck for a little while. Even if it takes a year or two, it will come back.