To have change in a doc of something we do not manually alter we use or buttons and or automations.
In you scenario a radio button alike scenario you get with buttons:
3 buttons and all of them modify the row and print their result in ‘Notes’. The label is a result of the choice made, below the first button logic
thisRow.ModifyRows(thisRow.Notes,"option 1")
and in the label:
If(thisRow.Notes.Contains("option 1"),"⚫" ,"⬜")
I am afraid that your data structure would benefit from a different set up, I do not consider this as a recommendable practice.
Hope it helps a bit, Cheers, Christiaan