If Zac is ganking, you need to be doing something to get your team an advantage. The simplest thing is to learn to track the enemy jungler, and warn your laners when a gank is coming

Zac ganked, What could you have done better here?

Counterganked

Ganked elsewhere

Farmed

Objective

Pinged

Nothing

Zac Ganked

Your team lost the fight, what did you do wrong?

Overstayed

Bad Fight

Worse Team

Poor Focus

Late

Bad positioning

Lost Fight

You ganked successfully, what was the best thing to do afterwards?

Shove Lane

Help Teammate

Tower Plates

Gank Elsewhere

Farm Jungle

Reset

Successful Gank

If you're down in takedowns Zac is getting stronger, and getting their team ahead. They are getting gold and xp from the takedowns, and are putting your laners behind as they are missing minion waves after being ganked and dying. It is important to either track the enemy jungler so you can either counter gank, or warn your team to back off when the enemy is near

You are down in takedowns vs Zac, why was this the case?

Laners Inting

No Opportunities

Other

Down In Kills

Your team went even in the fight, what did you do wrong?

Neutral Fight

Zac took the drake, what should you have done here?

Drake Lost

Kaisa Not Here

Zac took the baron, what should you have done here?