The only ETFs I sell naked puts on now are SPY and QQQ. More volume and less risk. If I were tempted to use SVXY now, I would sell the 7/10/20 27 put for seven cents and hope it expires worthless or I buy it back for one or two cents.
Here's the system I'm using now. It passes up some profit opportunities but it almost keeps me out of trouble.
View attachment 234993
View attachment 234994