tricky default branch activity on github

tricky parts today:

github activity contributions have been inscrutable. Wondered where my activity has gone, resp. not shown.
Ah, because i committed to a different branch, not master.
checked out github FAQ, shown that only default branch commits getting reflected in Activity Dashboard.

Changed default branch to 2.nd branch, committed criss-cross merged etc. still no activity.
the single one and only activity that is shown is the open pull request.

So this thingie stays a riddle.

cu

https://docs.github.com/en/account-and-profile/setting-up-and-managing-your-github-profile/managing-contribution-settings-on-your-profile/why-are-my-contributions-not-showing-up-on-my-profile