Arrange the calendar to Mo-Sun

Hi Guys!

I'd like to ask for help regarding my calendar on my Sharepoint Site (online version). Unfortunately, I don't like the actual look of the calendar: Sunday-Saturday which appears on the main page (not in the calendar view!)

I'd like to change it to Monday-Sunday because it is more useful and convenient for my team. I looked at every setting but the arrangement remained the same.

Please help me if you have any suggestions for me.