Coach Women's size 8 rainbow

Why does it feel like it won't stop raining? really tried to have these fit. I'm a seven, and they were out of size 7', so I bought the 8 thinking it would be fine. My foot slides in it because it's a true size 8 I believe. I'm going to be a grown up and find a new pair that fits. I included a picture upside down so you can see the translucent heel that has an ombré look to it. It is in good condition; not perfect because I did wear them for one season when I wanted to look stylish in the rain.