people surrender even when u win the game

(this was a normal game but i am still pretty mad, sorry for bad english) hey i just have a really good game with shaco. my team were doing ok in the start. only bot were hard losing but they up getting a bit fed and good too in mid game. in late game we won 4 teamfights pretty much. took down some towers we all were doing so well. but then we regroup mid (but not malphite becuse he wanted to push bot. and it was a 5v4 teamfight, sadly we lost it becuse azir and vayne focus on sona for some reason. i just wanted to take down this sivir becuse she were doing most damage. we lost ONE teamfight and ONE tower they scored an ace. becuse when we all died malphite tried to 1v4 and got killed really qucik (swain was dead) they all agree on a surrender when me and azir just respawned? like what? this is a huge problem for me becuse my team8 always wanna surrender after we lose a teamfight or a tower. no matter what i tell them "we can still win. we lost the teamfight its ok we can still win this.) they wont listen