I would rather have a friend who has a high self-esteem so in that way when I hang out with them, I'll feel pretty confident of myself too. As they say, you are who you hang out with. If I were to be with someone who didn't feel confident, that kind of energy will rub off on me and let's just say I would be insecure. But that aside, If I had a friend who has low-self esteem, i would do my best to help them and cheer them up.
Subjective information is anything that is based on personal opinion, judgement, feelings, or point of views. Meaning you would have to interpret what they mean and try and make others try and see your point of view.