Hi
I need you guys' opinion on if it is possible to change people's perception of me and gain new social proof.
I am very well aware that to be good with women, I need confidence, abundance and social proof.

In past two years, I had braces on, hung out with AFC friends, did not have any girlfriend, was socially awkward, was not confident and I did not care shit about my fashion. I felt that I have been branded as a "loser" by girls and those outgoing social circles in school. And I am wondering if I can just "clean slate" it, and be perceived as a new person again.

Having realised that, I began transforming myself; I removed my braces and filled my wardrobe with clothing that suits me nicely. I now look good, and that has given me an enormous confident nowadays, which allowed me to become much more outgoing. Girls at school just started complimenting me, saying my fashion looks great; they also started calling me as a Dramatic Asian, as I transformed completely just within two days.

So my question is, do you think it is now possible for me to clean slate my brand as a loser, and make people see me as a new guy, or do I have no chance but to remain as a "loser"?

Thank you guys, I appreciate every single answer!

You answered your own question. By taking action and improving yourself you can see that the results you get are better so you are changing others perception of you and you are no longer labelled as "loser".
However I wouldn't rely on others opinion to define what I am worth, but this is another question.

Thank you for the answer!