Change is become better or just be myself?

I realize I had much different between before I enter UTAR and after I enter UTAR. I easier felt lonely after I come UTAR.
Felt like actually nobody really knows and cares about me.

They won’t care about if someday I'm not together with them. Sometimes I will have this feeling but this is just what I think, actually not really is the truth.

I don’t know, but I'm a person really care about others opinion although I don’t show my reaction. Then, I tried to improve myself to react more emotion to friends but I realize again, why I feel I don’t really act like myself now?

I just like changing my personality for others people?

Is it good if I have something change? I don’t know whether is it better if I just be myself or I should change something from myself?