Weightloss tips?

Why am I not losing any more weight? I started eating really healthy and working out a while back. I have not lost any wieght or inches for about a month. Before I was down abt 15 pounds but it stopped and has been the same. Idk what to do now because I’m considered obese and need to get this weight off so I can live a normal teen life. But now nothing is changing and it’s probably been a month and a half since something was different.

And it was working before