I have an ilvl of ~375, I usually only do 1 or 2 M+ for a weekly chest if I happen to catch a guild group going... which doesn't often happen as outside of raid nights I'm often online during weird times.
Anyway, tried to pug a +7 the other day before reset and got denied due to my Raider.io score... which I've paid zero attention to and have no clue how it works. Their group their rules, so I /shurgged and didn't worry about a chest that week... like I've done in other weeks where I didn't manage a guild run.
I could start my own group but meh, I honestly CBF. My guild only raids heroic and I'm doing just fine without farming M+ gear. Of the few weekly chests I've gotten it's all been trash anyway.