Difference nuance in English between "I feel bad" and I feel badly"

Question

How would express this in French.  I follow the first as "je me sens mal"  as in I do not feel well.  The second expresses more of an emotion of how you feel.  Thoughts.

Answer

Bonjour William,

In fact, even though it's often said, "I feel badly" is grammatically incorrect. "I feel bad" has both of the meanings you describe, as does Je me sens mal.

https://www.merriam-webster.com/words-at-play/do-you-feel-bad-or-feel-badly

Answer

Hi William,

"I feel badly" in English would refer to not being able to feel well, as in your sense of touch doesn't work well. I'm not sure if it translates into French similarly.

Answer

I feel badly is used in some parts of the UK instead of I feel bad.. but it is dialect and not grammatically correct English.