If it’s ok for you to transfer photos from your iPhone 8 Plus to your computer, try Coolmuster iOS Assistant. With its help, you can back up all photos or photos you want to your computer directly via USB cable connecting. It’s esay to use. You just need to install it on your computer, start it. Connect your iPhone 8 Plus to the computer via USB cable. Here, you need to enable USB debugging on it. A short time scanning later, you can back up photos easily. Hope this will be help.