(Jungling) Pushing Losing Lanes

Heya,

so I happen to be in low - mid plat practically only playing jungle Shyvanna. I´ve learnt to respond to at least a couple of situations in the game yet I happen to face a situation here and there I have no response to.

My Team: Top: Yasuo Mid: Ahri Bot: Ezreal + Blitz Jungle: Shyvanna

Enemy Team: Top: Fizz (AD) Mid: Veigar Bot: Cait + Janna Jungle: Reksai

All of my 3 lanes were pressuring the enemy towers. My botlane being 8 CS ahead, Mid and Top pushing but being 10 Cs behind. I was a lvl up on Reksai because I managed to counter 2 of his camps (He chose to start topside at crugs) and showed up bot without having any impact. I also managed to get down some deep vision into their topside jungle so we knew the whereabouts of Reksai pathing. I knew that Reksai was going to gank top at lvl 5 so I went into the lanebush preparing for a countergank since yasuo did not want to back up with 50% of his hp. As expected Reksai went for the gank and I tried to countergank it. The countergank resulted in them getting the kill on yasuo due to their burst and Fizz (50%) hp getting away due to his e which wasnt needed for the Yasuo kill. The same thing happened midlane with Ahri being flash stunned near the enemy tower -> the enemy team bursting ahri from full hp.

So what I am asking is: What is the right response to games where you have 3 pushing lanes without any kill pressure? I am not able to countergank pushing lanes in losing 2vs2 matchups and I also wasnt able to dive a full hp cait + janna in botlane.

Would really appreciate some answers/tips since I have no idea how to play those games. When Reksai pulled off some ganks all lanes abused the hard counter matchup and were easily able to oneshot my laners/win the 1vs2.