If every game is winnable... (VOD Review)

According to some people this sub every game should be winnable. If that is indeed the case then please give me advice as to how these games could have been won. I would greatly appreciate any feedback given. One is for a game that was close and the other is one that I view as completely unwinnable even if we scored a point. First one had our other support moaning the whole time about how it was the Rein's fault, I also got 4 commendations in the match, yet we still ultimately lost by a margin. My rank is Gold 4-3 peaking at high 2 about a week ago, I'm currently on an 11 losing streak over the past few days

1st game:

Code: 6SJ3NB

Name: Anon

Platform: Console

Hero Played: Juno, Ana

Map: Blizzard World

Score: 2-3

2nd game:

Code: 6R5JNT

Hero Played: Lucio

Map: Samoa

Score: 1-2

I think in the 1st game I could have died less, I had the least deaths on my team by a few but I still died 9 times. With the 2nd I was just playing poorly and not aiming well with Lucio's projectiles, and not focusing enough on my team.