Not happy at goal weight

I was 82.9kg in January. I wanted to be at a healthy bmi and aimed 68.9kg as I'm 166cm. I'm 69.8kg now, but im not happy with the way I look at all. I thought I'd look thinner than this

I wanna go back to 64.6kg, which I was 4 years ago and I felt skinny. It was pre pregnancy so at first I thought it was impossible so set a healthy bmi target. And now I'm feeling sad that it is another 5 kilos that I have to lose if I wanna feel as good as I did back then :(

When the goal post changed as I was so close to it, I'm feeling really down and like I'm so fed up with this and can't patiently wait for another few months to do it :(