Will going to the seaside alone make people feel embarrassed and lonely?

Depends on your mood. And whether you enjoy being alone, or whether you feel uncomfortable or embarrassed when you are alone. Anyway, in my opinion, the time alone is beautiful. When a person goes to the seaside, he can forget the troubles around him and let himself break up well. There's nothing embarrassing! Only when you can't put play in your heart will you have this idea. It doesn't matter, as long as you enjoy this process, you won't feel embarrassed and lonely slowly.