Why is it so hard to get good teammates?

As the title says. Why? 

I literally just got out of a game with an octane, and while we did survive me-second to last circle, octane-last circle- it was not that fruitful of a game. 

We barely stopped to fight anyone since the octane only wanted to run, going through things so fast that I didn't have time to grab really anything. From the first landing it was a struggle getting ammo, gun components, shields, backpacks...etc. I did my best to keep up though. I ended up with a white backpack, a flatline with no extra components, and a shotgun with a lvl 3 barrel. 

The octane in his hurry to get us away from other teams, got us stuck right in the middle of the remaining squads and it was a back and forth between one end to the next, trying to avoid getting hit, and each time, despite the dodging and weaving, someone would chip off my armor, forcing me to have to heal it and use what little shields I was able to find. 

Meanwhile, octane is just running around everywhere, not taking a hit because he was so much faster, and sitting on all the shields. 

Like holy cow, why didn't we just hold up somewhere and fight someone off instead of getting smack dab in the middle of it all? 

It was super annoying and frustrating, trying to get supplies to see my teammate had already raided it all and even more frustrating trying to catch up.