Why do men turn their heads away or bow their heads to play with their mobile phones when they see you? I didn't talk to him, but I met him occasionally on the first floor.

Sometimes, people will unconsciously show some behaviors, which may be related to their personality, social habits or cultural background. The situation you mentioned may have the following explanations:

1. Shyness or nervousness: Some men may be shy or nervous easily. When they meet strangers or nervous situations, they may show uncomfortable or evasive behavior.

2. Not interested: Men may not be interested in some people or things sometimes, and they may show indifference or avoidance when they meet you. But that doesn't necessarily mean they have any malice or dislike you.

3. Social habits: Some people may have different social habits and may show avoidance or avoidance behavior when meeting strangers. This may be related to their cultural background, personal experience or personality characteristics.

4. Unconscious behavior: Sometimes, people will show some unconscious behaviors, which may be related to people's inner feelings or emotional state. When a man sees you, he may have no special intention or feeling, but an unconscious behavior.

No matter what the situation is, if you feel uncomfortable or troubled, you can try to ignore this behavior or take other ways to deal with this situation, such as greeting them, smiling or actively communicating with them. If you are troubled by this behavior or need more support, consider seeking professional help or sharing your feelings with someone you trust.