I got ganked once and autodied to electrocutes and ignite and lost lane

Ignite deals a total of 80+25(per level) true damage over 5 seconds

Electrocute deals 50+10(per level) (+50% bonus AD) (+30% Ability Power)

Using both of these at level 1, and nothing else, will total to 130 total damage (not including mitigation)

In order for the enemy to apply Electrocute, they would need to apply a combination of 3 ability and/or auto attacks ... I don't know if any champions actually even have enough attack speed to apply 3 auto attacks in 3 seconds, and they can only have 1 ability at level 1. We will need to assume that they will use an auto attack, and ability, and another auto attack. So, lets use the champion with the most base attack damage at level 1, that is Rakan with 70AD. Lets even start him with a longsword, totaling 80 damage.

That is 80(auto attack) + 70(Gleaming Quill) + 80(auto attack) = 230 damage (not including mitigation)

We now have a total of 360 damage (not including mitigation)

The champion with the lowest total health at level 1 is Caitlyn with 481 HP

I'm not counting Kled's independent health because the enemy still has to deal damage to Skaarl, or Anivia because her passive effectively doubles her health.

So in order to die from these alone you would need to have been below 75% of your maximum health before Rakan attacked you the first time.

That means you were already missing at least 120 health, which isn't necessarily difficult, but it does suggest that there is some information missing from this account.

Gaining levels actually works against your case here because the champion who gains the least health per level is Gnar (in mini form) at +65 health per level, which out paces the rate of increase from Ignite, Electrocute, or base damage statistics.

You did mention that this is a gank, .. so there is likely one, or even two enemy champion who was there to attack you.

You are laning, so there are probably minions in the lane as well. There are 3 caster minions in a wave, each dealing 22 damage per attack. That adds up pretty fast early game.

Did you take a tower shot?

We also might want to consider if this gank might have been avoidable. Were you over extended? Did you have any wards placed?

....

My point is, .. you are not providing us with enough information to really understand what happened ... so you probably aren't going to get a whole lot of sympathy.

"I stubbed my toe once got pancreatic cancer and died"