Honestly the reason why your team wanted to surrender is because they have given up. In 22 minutes that is what is left of your base? 2 inhibs are gone, and the nexus turrets are next. I never look at late game we can win! I look at how can we get to lane game to win. You're clear potential is fine. However this also means your team was to busy getting caught before they were seiging turrets. In 22 minutes you guys have lost to much to make a come back. If you guys didn't lose your inhib turrets I would say go for it. However you lost both mid and bot lane. If they didn't win on this push that is okay. They will go do baron while you guys can only clear both lanes. Then they will come back and end it within the next 2 or 3 minutes.
From the looks of it the enemy comp is Renek, kha'zix, , zyra, jinx and morgana. I cant tell who the fifth player is, compared to your jarvan, elise, ryze, lucian braum.
For me personally I actually dont think you guys can win late game as good as you thought. A full ap zyra, will fucking HURT the squishies of your team. The enemy team can catch your team very very easily. They are better at skirmishes. Full built teams, I still dont think you guys will necessarily win.
Though the whole report this against you is laughable I will admit. Oh, and we can easily find the game using your name, and then see the player names as well. So blocking them out is a waste of time.