Is there a software in Windows that will make file transfer between an iPhone and PC easier? I have tried iMazing. It's kinda great, but the problem is that when I am transferring files from my Windows PC to iPhone, (videos to be precise), it doesn't transfer all the files that I need. I suspect it's the format.
The software you should be looking for is iTunes, specifically iTunes for Windows. You can download iTunes for Windows via:
If you wish to transfer and playback unsupported videos files on your iPhone, install VLC for Mobile on your iPhone and use iTunes File Sharing feature to easily transfer video files to your iPhone.
For detailed instructions regarding file sharing, refer to the Apple Support Article: