If you want to change these category names into Images

You can follow these steps
#1. First, find category url. In my example, it is:
- Bike: /store-2/bike
- Brand: /store-2/brand
- Design: /store-2/design
#2. Use this code to Custom CSS box
a.nested-category-breadcrumb-link[href="/store-2/bike"] {
background-image: url(https://cdn.pixabay.com/photo/2023/10/10/15/37/motorcycle-8306765_1280.jpg);
background-size: contain;
background-repeat: no-repeat;
background-position: center;
color: transparent !important;
}
a.nested-category-breadcrumb-link[href="/store-2/brand"] {
background-image: url(https://cdn.pixabay.com/photo/2021/11/05/19/30/animal-6771900_1280.jpg);
background-size: contain;
background-repeat: no-repeat;
background-position: center;
color: transparent !important;
}
a.nested-category-breadcrumb-link[href="/store-2/design"] {
background-image: url(https://cdn.pixabay.com/photo/2021/07/18/04/43/laughing-kookaburra-6474620_1280.jpg);
background-size: contain;
background-repeat: no-repeat;
background-position: center;
color: transparent !important;
}

#3. Result

#4. If you want to remove lines between Category Name/Images, you can use this CSS code
span.breadcrumb-separator {
display: none;
}

#5. If you want to increase image size, just add width/height
width: 300px;
height: 200px;
