AFKS: How does one carry when it's 3 vs. 5

Afks seem to be a common thing, at least in bronze. I had a blitz straight up tell us as we where about to go in game" I'm afking as soon as the game starts, later nerds". Than a little bit later another ally afk'd making it 3 vs 5.

As a result of being outnumbered, I built resistances. Despite having almost 400 armor and right under 3000 health, enemy Trnd still dealt massive damage to me and what was left of my team.

We tried to surrender, fyi I normally don't surrender, and 2 yes, 1 no. Even when outvoted, surrender did not go thru.

Because things like this are so common, I'm seeking gameplay tips to be a valuable asset to my team.

I've recently taken up playing safe early, pushing objectives when there is an oppurtunity, warding more, and also helping out teammates when I can.

I'm not good with ranged adcs, and prefer melee champs like Olaf, Mordekiaser, and Udyr. With my experience with Olaf and Morde and my mastery over them, I can adapt my gameplay to counter other champions based on thier playstyle, observing thier cooldowns, poking, resistances, counterbuilding, and when to all in.

For example, as Olaf top against Darius I max true damage and sustain whilst building armor, and avoid his Q. Halariously counter Darius, lol.

But how does one carry a 3 vs. 5?