Although the lowercase letter R is 3 revolutions 180 degrees as you said, there must be two points on it, otherwise you won't know what it is.
Exaggerated writing in word is generally not used for handwriting. Note that printing is different from handwriting. Don't print by hand, it will lead to confusion of others. M and n are the same, and the handwriting is better.
Hehe, signature is an exception. A signature is generally not signed according to the usual calligraphy or writing, but by inventing a personal writing method that others can't imitate.
Now official documents are printed, but they were all handwritten in ancient times. The handwriting at that time must have been cursive.