Lost money before reverse stock split. Tax deductible?

I bought close to 50 shares of a stock for $2000 back in 2018. That stock lost its value by end of the year 2019 to almost $200 (making it a loss of $1800 to me) and then stock did a reverse split giving me 6 shares valued at $200. 

 

What happens to that $1800 loss? Can I claim it this year? The paperwork/statement I received only shows a loss $178. Since I never sold the stock, does the loss carry forward until it's sold?