Absolute easiest way to install Google Play on 5.8

There have been several ways bantered about and many are still having no luck. I have done it several different ways and it has worked for me. To make it work you need five different APK's. They are Google Play Services, Google Play Store, Google Services Framework, Google Calendar Sync, and Google Contacts Sync. You can download these individually from APK mirror (http://www.apkmirror.com/) or download the Google Installer_V2.0 for MIUI (http://xiaomitips.com/download/google-installer-app/). This is an all in one installer and is in Chinese, but if you just select the button at the bottom of the app, the install will start. Do not open any of the services yet when the APK's install. You will need to reboot your device at the point everything is installed.
Upon reboot, simply select Google Play and login. I hope this helps. When you install the rom, via TWRP, make sure everything is deleted and to are doing a clean install. You can then install SuperSu for root. It already has a Chinese version installed, but when I ran root required apps, I was notified that root was not installed. Once you have root, you can uninstall all the Le-bloat.

Absolute helpless newbie at rooting/internal data recovery

I've had my phone since may 2015 and never had a problem until last month. I'll save you a long ramble and just say it randomly restarts itself multiple times a day. Until, about 3 days ago it decided to restart (like usual) but this time it factory reset itself.
Now, I don't have an SD card or anything backed up; so ALL of my photos/videos for the last year+ has been completely wiped. I searched high and low for all sorts of android data recovery apps but nothing could find my photos that were deleted from the internal memory. A lot of them said for them to "work better" I'd need a rooted phone. So, at the end of my wits I decided that's what I'm gonna do. Whatever it takes. I've been searching for several days trying to figure out where to even begin but alas nothing. And I truly do not want to brick my phone.
A little about my phone (Spring Samsung Galaxy Note 4)
Software version: N910PVPS4DPE2
Hardware version: N910P.05
Model number: SM-N910P
Android version: 6.0.1

Hopefully that's a sufficient amount of info to point me in the right direction. A step by step guide would be a godsend. If anyone can help me figure this out and recover my lost media I'd be beyond thankful!!