How to transfer iPhone photos to PC?

I have an iPhone 6 and I want to transfer the photos I've taken on my iPhone to me PC so I can delete them and make more storage room on my iPhone.
I've had an iPhone before and I used to just use the File Explorer with my iPhone 5, but for some reason when I plug my iPhone 6 into my computer it doesn't come up on File Explorer?
IIm running with Windows 10.
I tried also using the Photos program on Windows 10 and when I go to Import, it says I need to connect a device.

's weird because when I plug it in, iTunes recognizes my phone just fine and my phone is charging, but it doesn't come up in other places on my computer. I've also authorized the phone to trust the computer. So I don't really know what to do now.
I also tried uploading them onto Google Drive and it's been stuck on the same photo uploading for over a week now. So any help on what I can do now is appreciate.

There are a few ways you can do it. You can email them as an attachment. Or you can connect your iPhone to your computer via the supplied USB cable.

Use iTunes.