Please stop with that "never surrender" nonsense.
Some games ARE clearly lost. Not all, but some are so clearly and obviously gone that you shouldn't even bother with it. What are you going to do? Stall for 10 more minutes in some kind of masochistic slaughter fest? No, just surrender and try to win the next one to save everyone's energy and nerves. You can play the blame game, idc, it doesn't change the fact that's it's lost.
Oh this will get downvoted now, I'll see it. After all "never surrender" is the golden rule for coming out of bronze/silver now, right?
Well, down there it makes sense. People in bronze and silver make SO many mistakes, even when they are ahead. 20 kills difference, doesn't matter, they could throw and we can turn it. However, this does not happen above a certain point, ESPCIALLY not in the current hard snowball meta. Ofc it's not at firstblood, that would be nonsencial. But at 20 minutes usually one has seen enough to know where this game goes. Taking team comps on consideration one can usually see quite well what side's going to win and who's about to lose.
Tl,dr: Stop making me waste time and energy into games that are clearly done for. It'd rather just go ahead and try to win the next one.
Not all games can be won. Focus on those where you actually have a chance and end the rest quickly.