Can someone help me with this?

The other day I was at a restauran and I smile to a woman trying to be kind while I was getting out while she was sitting down and she looked me in a despective way. That had never happened to me befor and I thought that if it ever happened to me I wouldn't feel so offended because I have never had a reason to feel unimportat because the way people that are close to me have treated me since I was born. Is it normal if I feel bad with myself for feeling offended by her and to feel bad with myself? I feel bad with myself because I would suppose tghat if something like that ever happened to me I would never felt offended if I really had as high self-steem as I thot I have and even less if the person that did that to me was a complete stranger. Thanks for your help.

if you're used to people smiling back when you smile at them, it's quite possible that, because she didn't, this has been sufficiently discordant to you that it's upset your equilibrium. it may not be that you're upset with yourself being upset that she didn't smile back. it may simply be that you're upset. of course, there's the possibility that this has dented your ego, especially if you consider yourself attractive, however, you're not saying that.