Showing too much interest vs. not enough. Good guy vs. Bad boy argument

From my experience with women, being emotionally unavailable and uninterested has been the most tried and true way to make a girl attracted to me. However this breeds toxic relationships and I want to move past that. I started talking to a new girl who showed her attraction to me first. I showed more emotions and would respond to her often and fast. I turned over a new leaf but now it's feeling as if she is losing interest. I have a feeling it's because I tried to bounce my bad habits but maybe it's not. What are yalls thoughts on emotional availability and how to approach a relationship like this. Any and all comments/ advice appreciated