The red line is the March level of CPI adjusted retail sales aka Real Retail Sales.
Speaks for itself for the damage done by inflation.
The blue line is monthly nominal retail sales. The orange line is monthly retail sales adjusted for CPI ex shelter.
All data not seasonally fudged.
You want to see the trend, and deviations from it? Draw lines. See for yourself. Don’t let the government’s seasonal manipulations distort your view.