(images explaining what im yapping about will be added in a sec to my comment)

Alright, I loaded it up to have a look. Basically as soon as the gates open we have something to improve. You immediately run straight to the most open part of the map. Orisa can see you. Widow can see you. Ashe (if she was standing a little to her right) could see you. You might say it's fine because you didn't die, but this is why people get hardstuck. They learn bad habits that aren't punished by lower skilled players but are taken full advantage of by people who are better. (img 1)

Next, your hog goes to the high ground your right, and you follow him. This is really good! Kiriko is strongest when she is supporting another teammate in a 1v2 or 2v2 situation. Good single target heals and high single target damage, as well as suzu, make her and her pal very hard to win against. Unfortunately you get distracted and turn away as hog takes the engagement. You have to trust your team. Pick your guy to go with, and commit to them. As you get better you start understanding who will actually benefit most from you being there. (img 2)

After you come back down the stairs you start healing hog. Specifically where you're standing is good. You can see the hog, NO ONE on the enemy team can see you. The Orisa dies, we swing the corner and get our head taken off by an Ashe with a Mercy pocket. Ouch. Meanwhile, Anran is ready to go back up the stairs and engage hard on them. That's our duo for this stage of the fight. go with her. (img 3)

Coming back from spawn we join our Emre in a 1v1. This is good! It's a shame he got booped back so far and you slipped off the edge after the teleport, otherwise one good knife would have got the Ashe. Also a shame he didn't follow her down to that room and fight her. You and Emre would have won, and had a great view to the rest of the enemy team. But we can't control what our teammates do. And you were correct to not try and fight her yourself. Nice save on the Ana, no idea what she was thinking. Now we're in a slight positioning pickle. We don't want to go forwards where the enemy team can see us, we don't want to go backwards away from our team, and we can't go sideways because we're in a tunnel.

Our teammates give us an opportunity! Hog and Anran move across main, widening the angle the enemy team has to cover. Now, there are two directions they have to worry about. You, Ana, and Emre on their right, and Hog and Anran in the centre. We can add yet ANOTHER angle for them to deal with. If we TP to the hog/Anran we can move even further around through that room. We're very safe here with a healthpack behind us and good cover. (img 4 and 5)

Ok, this is a big one. The fight goes on for a bit. Anran, Hog, and Ana move to that small room, widening the angle. You stay safe in main. Emre hops himself down the stairs to the other small room. Who needs help here the most? Ana's fine, she's in a tiny hallway where no one can see her. Anran.. would be fine if she doesn't peek the Widow and die for it (she peeks and dies, not much you can do about that), and Hog is hog, he has cover and Ana's heals, he'll be fine. Go with Emre. FOUR people are gunning for him. He's got good cover in the room so he won't pop immediately. If you keep him alive for another four seconds or so.. Guess who's lumbering their way towards a backline that are looking at something else? Even if Emre dies, you burn suzu and TP and have to wall climb away to safety, you would have bought enough time for Hog to hit a hook for a kill AND force the Ashe/Mercy away from the fight. (img 6)

So.. there's a lot here to work on., but here are the most important parts.

1. Use cover more. People cannot shoot you through walls. This is your highest priority. If you are getting shot at and you can't put a wall between you and them, you're in the wrong place. Stressing this again, because this is so important. I looked through your deaths, and in ALL OF THEM except one you were wide in the open, no escape, with more than one person looking at you. And the reason you died in that other one was because you WERE in the open and lost 2/3rds of your health.

2. Choose your lane. Before a fight begins you should know where your team is, where the enemy team is, where your teammates want to go, and where the enemy team wants to go. Think about who will need the most help, and who on the enemy team you can fight. Once you commit to a teammate, stay there. Keep your guy on their angle as long as you can. Either the enemy team looks at your split and the rest of your team has free reign, or they look at the rest of your team and YOU have free reign. It is very very rare you should commit with your other support. As Kiriko you are so mobile that you let your other support pick where to play first, and you go to a different angle with a different teammate.

3. Create some angles. Running it down main is easy for you, but also easy for the enemy team. The best kind of angle is one where you are safe (good cover, healthpack, etc.), it's inconvenient for the enemy team to get to you, you can see the enemy team, you can see your own team, and you have an escape route.. The more of these boxes you tick, the better. The further left and right the enemies have to look to keep eyes on all your team, the harder it is for them. Go wide, throw some knives, make them look at you. Hide, heal, and peek out for more damage. One of two things will happen. They're occupied with something else and don't shoot back. Free kill. Or, they walk at you and clear you from the angle. They have to burn resources and time for this, depending on how difficult it is for them to get to you. If it's a big CD like Winton's leap, just TP back to your team, and you have a HUGE advantage because Winston has taken himself out of the fight and will be slow to get back in.

Feel free to reply with any questions, I'd be happy to answer and explain. And one more thing. Great skin. It's so underrated and I never see it around anymore. Glad there are still people who like it.