Bot seems to have lost lane; not surprising considering how deadly an Ashe Leona lane is for MF. I'm surprised they did as well as they did.
Top picked Yasuo and got shit on by a TK. That makes sense; Yasuo has problems against all in matchups unless he can snowball early.
As for Lee, it looks to me as if he got killed trying to gank (probably bot) and never managed to come back due to Lee scaling poorly.
Uh, yeah. This is pretty much just a normal loss. Most of your allies had poor matchups both in lane and in teamfights, so it's really not too surprising.
They did, however build pretty damn poorly. MF needed a QSS against all that CC, Karma should have gotten an hourglass instead of Rot, and Yasuo should have gone for either GA or BT instead of Rot.
It's frustrating not being able to carry your team, and this is perhaps an extreme example (Solo carrying vs 3 stuns and a TK? Yeah good luck with that) but it really just seems that they had a bad game.