Can someone explain mentality to me?

So nearly every game is a one sided roflstomp that maybe you can delay to late game but people just give up. What goes through someone's mind when they are 0-1 and then go back to lane only to die a minute later? See to me, its play super safe, sacrifice farm to not feed, but it seems like that just doesn't click for others and i dont understand how it doesn't. I feel like even if you had even half a brain, you could figure out that if you died the first time you are going to die the 2nd time, it doesn't take a rocket scientist to figure that out, hell my 2 year old could probably figure that out for themselves. So how is it every single game people go 1-8 or 2-7, i dont get it. I feel like its intentional feed at that point, there is no way you can convince me that they arent either braindead or intentionally feeding, something has to click in your brain saying "no you cant fight the 5-0 garen who has a spirit visage with your 0-4 lux".

I guess I'm salty, but I'm trying to understand the mentality of these animals so I don't have an urge to cry myself to sleep realizing I'm winning lane 1v2 and still losing game.......