Your ilvl is enough to do that content, and there are groups out there for you, but not ALL of them.
People with 900+ ilvl, could do m+ with lower geared players, but why would they when they can easily get other 900+ilvl players in there group. It's the safer bet.
I personally, will only join normal/heroic EN+ToV groups each week, that only take 900ilvl+ players, because that guarantees an extremely last run, with 1minute boss fights. Rather than joining an 870~ ilvl grp, where boss fights can take up to 4minutes each.
Get your key, and sign up to carry groups, they'll boost it up, or make your own group (Do wqs while you wait, it can take a bit) or join a guild, get some friends. At 882 you can easily get into a normal NH, currently there are 6 groups who would take you looking for people, one called "chill N NH clear, 870ilvl" Just look for the ones that will take you, don't focus on the ones that won't.