I've been 0/10 and ended the game 20/10, I've been 10/0 and ended games 10/15.. Only so much is in your control and sitting in base practically afk isn't going to help because now that laner who was killing you for zero gold is off farming your team who have a chance to carry team fights.
A lot of it comes down to what the team wants and what they are willing to do because in the end it is a team oriented game. If they want to afk farm their lane while you get 3v1 in the jungle or tower dove by the enemy jungle you dying is the price they pay for that. If they want you to back off, lane swap, wait for rotation you do it.
At the end of the day the only thing that matters is people try their hardest, communicate and work as a TEAM. The game is overrun by toxic childish people who are flaming you, calling for /ff and just sitting back watching teammates get killed because they dont want to die and ruin their positive KDR and are just guaranteeing the loss. If my team takes the toxic route i just /mute all put some music on and try to macro hard asf while being as safe as possible. Quitting never really crosses my mind until my team members decide they want to sit in base and no longer contribute regardless if i am the carry or the one having a bad game.
I made this account so i could play with my wife and a few family friends who are all first time MOBA players and got to watch them get flamed in their very first Blind Pick match because they died a few times trying to learn to lane again Yi and Morgana who where clearly at a minimum of high silver low gold skill level. I did my best to rotate in between them to gank and help them learn matchups. The other two watched first from a bush while doing a /ff every time it was up.
This game has a people problem. Instead of people being mad at Riot for not designing a decent match making system outside of Ranked(Not that i think the ranked match making is good either) they take it out on players.. Again this was BLIND pick mind you and it gets worse once you get into the more "serious" game modes. I mean hell they flame you for taking "Insert Champion Here" in Blind pick as a level <20 because they spam called a lane or role and you have 2 champs outside of free rotation and you are trying to learn one before jumping around.
I haven't been able to take this game seriously in a very long time because of the people in the community i just play with new players, randoms and do customs with people who want to learn about all the champs they are against, jungle clear, macro, items. Pretty much whatever anyone else wants to do while they are on.
Went off topic and into a rant, Sorry!