The guy in the headphones listening to music and shaking his head in nature
Man in early 30s judging something and not approving it shaking his head in disapproval
Exasperated man sitting at an indoor table shaking his head and gesturing with his hands showing that he does not care about the conversation or point under discussion.
Unhappy man in 30s frowning shaking his head no and giving a thumbs down expressing his negative opinion and disagreement