Lost attraction?

Had a few really good dates with this girl, made out etc. On the fourth date tho I’d had a bad day and wasn’t really in the mood and acting nervous and we didn’t make out for ages and it was so obvious I was delaying it cos I had no balls. And then a couple of days after she messaged me saying that she’s too busy to see me at the moment anymore. I know what this means.

Is there any chance for me to regain attraction? Is it worth texting her again?