Knitting Chart HELP

I found this knitting chart and photo on Pinterest. Can someone please help me understand how to read this chart. Does it indicate the wrong side rows, or are they insinuated as purl rows? I think I understand the symbols… vertical line: knit, horizontal: purl, O: yarn over, right leaning slant with one leg: k2tog. Can you correct me if I am not interpreting the symbols correctly. TY soooooooo much!!!

https://es.pinterest.com/pin/16466354867862096/

Welcome!
Lovely cable and lace. Yes, that all looks correct to me. It looks like all the rows are given in the chart so you would purl 2 tog on the back in place of the k2tog. You’ll have to try it out though to be sure.