Similar to the answers above, you need a heatmap pivot table — but, to get the days of the week sorted in the correct order, you do not use the Day of Week dimension. ("Day of Week" is a text-formatted dimension and therefore will always sort alphabetically.)

What you want to use as your column is a formatted Date dimension, which is formatted as datetime. (For Google Ads, use "Day".) Select "Date" as your base dimension, then go into the dimension details and change the following:

Data Type: Date & Time > Day of Week
Display Format: Day Name (or "Day Name abbreviated" for Sun, Mon, Tues, etc.)

Then sort your chart's columns by Date > Ascending.

This should give you the days of the week in chronological order, starting with Sunday.