>>2215281I'm not "wand anon", but
>>2215255 doesn't look that terrible to me. Yes, it has jaggies but the answer is "learning to deal with them", not "quitting".
Offer advice, not derision and negativity. Read the sticky. "Constructive criticism"
I selected the object, turned it into a mask, smoothed the outline, and then feathered it inside 1 pixel. That meant only the pixels within the boundary (or partially within) could be effected by the tools. I erased them.
Close up, it looks smooth to me against a contrasting background. If you disagree, point out _specific_ problems.