Losing My Self-Esteem?

[Nina]

I am an international student and I am studying in Scotland at the moment..The problem is I am turning 18 going on 19 and I have LITERALLY never been asked out before. Maybe because I come from a relatively conservative culture perhaps, but still all my friends seem to have guy friends but I do not (Not that I am desperate but it is just weird). The issue is, and I am not saying that because I am talking about myself and am not saying that to claim any superiority to my colleagues, but I know that I look relatively good. I dress up really good in outings, I am not a drama queen in any kind of way..I am a very decent , but not naive, person. I literally never blackmouth others or engage in that.. My family and my studies are my priorities, but I know I am relatively good-looking.. In my brother's wedding, several of his friends which I do not know asked about who I am.. To be honest, I felt happy because no guy has confronted me and said that I look pretty; nevertheless, sometimes I feel guys are reluctant to talk to me because I always show that I am an independent, strong girl who sets her values clearly.. One guy from uni. whom I don't know once added me on Twitter and told me "Hey baby!"m and my response was "am not baby. Am just [my name]". I do that because I do not really want to suffer from any love traumas I read about, see, or have heard of. Even my flatmate whom I used to feel had a crush on me in the first month of uni. started to drift away from me and got a girlfriend a month later, and when I went out together with him and 3 other flatmates of mine (and I haven't seen him during holidays), all those feelings and memories of remembering when he for example once came late to uni. and found me sitting in the corridor with my flatmates studying, he was going downstairs, but then came upstairs and sat next to me to start a conversation. I blame myself a lot for not opening up and staying naturally but given some circumstances, I do not want any guy to take advantage of me, but I do not feel loved except by God. I just felt like speaking to somebody. Thanks a lot for your time.
I am from Lebanon..It's not a matter of grooming at all I am a clean freak actually!