Why it is so easy for people to give up?

Seriously, I am getting tired of people who, on the first misplay/enemy ace/enemy first blood/enemy taking dragon or baron/enemy gank, start to say that the battle is over, even when they actually have the advantage.

There are some games that are obviously over. For example, enemy team has 10 kills, your team has only one, enemy team got the 2 first dragons and they already destroyed the tier 2 mid and tier 1 bot; if your team is early game focused, then it doesn't matter if you try to hold until late, because you will be outscaled anyway. However, situations like this are rare, and on pratice, most games can be won if you don't just give up.

Nobody is perfect, not even Faker is, and everyone can make mistakes, but if you give up and starts to rage and let your team fall to toxicity and fights, then you shouldn't complain that your teammates are holding you down.

It is also really boring when someone on your team spams /ff everytime it is avaliable just because they lost the will to play.

I seriously want to know how to deal with situations where my team starts to give up on games where we can still potentially win. I don't know if this happens very often on NA, but on the BR servers, it is common for teams to give up easily after one or two misplays.