Stuck On Corrupted Windows

Hello, I’ve been using windows boot camped on my iMacs
for about 3 years without any problems. I currently am using windows 10 on my boot camp. Unfortunately the power went out where that computer is plugged in. And it seems as though windows is corrupted. And I can’t get back to macOS. When I turned my iMac back on I got a windows message saying “scanning and repairing drive”. I let that do its thing for about a hour before it said that windows could not start correctly. After that every time I turn it on I get a black screen with my mouse. I booted into safe mode and got the same thing. I then tried to reset windows and got an error saying “There was a problem resetting your pc”. I then created a windows recovery usb but it can not find it when I plug it in. I am hoping for some help on how to get back to macOS or to get windows working again.

Tech Specs

21.5 Inch iMac 4k

3.1ghz quad core intel i5

8gb of ram

1tb ata drive

Thanks for the help in advanced. 🙂