You already have SPXS as a symbol, and while I like trading this inverse ETF, it is 3x leverage.
SH is ProShares Short S&P 500 ETF (1x). Backtested really well during the financial crisis of 07-08.
See screenshot starting balance was 10k and ending balance over 2mil. Obviously this is a special situation and each trade is risking up to 10% of avialable capital with a max of 10 positions open at once per OA bot rules.