Hello, for media files it’s very easy if you have Windows 10 installed in your PC, just click on this [https://support.microsoft.com/en-us/help/4558760/windows-10-import-photos-and-videos-from-an-iphone-to-pc|link] and follow the steps, for Whatsapp however it’s a little bit tricky, I’ll suggest that you choose any method that suits you the most but I think the fourth one is the best, in this [https://mobiletrans.wondershare.com/whatsapp/transfer-whatsapp-from-iphone-to-android.html|webpage] you’ll find detailed instructions.
I’ll be here if you need more help.