To start, today was my first day using Galaxy Watch Studio and I have no background in anything like this. I started tinkering around and found it to be really fun. I was browsing through the menus and could not find a way to play a text-based day of the week (MON, TUE, WED etc…).
For what you described, insert a digital clock element, change the ICU format to E or EEEEE or something like that.
While you are new, I suggest to read the tutorials here
Learn from Tony Morelans videos
and/or from stories of people using it well
[edit: link to “stories” updated as https://developer.samsung.com/sdp/podcasts/s01e07-tomas-joscak.html link does not work]