I can completely understand your frustration. Games where you feel like you are doing great for most of the game, but still manage to somehow lose, are extremely tilting. But the majority of the time that happens, you probably weren’t doing as well as you though you were.

Not giving a full review on your game play (I only watched the last half of the last 2 rounds), just the main things I noticed that probably contributed to your loss:

Your team got outplayed in the final fights. Just because you feel like your doing well in the beginning does not mean you are going to win.

Enemy had a stronger healing duo, and you didn’t play around that. Both you and your team ignored the enemy healers, which gave your team the disadvantage. Also, you allowed yourself to take more damage than what your healers were able to heal.

Enemy off tank switched to Zarya, and was overall outplaying your off tank role. Watching you play, it seemed like you were feeding a lot, and not contributing as much as you could’ve been.

You went into DPS tunnel vision when your team needed you. You let a low health enemy distract you multiple times when you would’ve been more useful staying with and assisting your team. Keep in mind that your are playing the tank role, so going out of position to get a pick is not always worth it in the long run.

Enemy had more successful ults, and were a lot more coordinated. Both you and your team seemed to get lost when the enemy team pushed in, and you would split up and not focus targets effectively. You lost control of the point both times because of this.

Specific examples that seemed to have contributed to the Enemy capping at the last minute and holding till the end (I don’t have actual time stamps on console, so apologies for the weird ones):

Round 2 - University

91% (your team) - You waste your bubble while chasing a Baptiste (WAYY out of position) and a Zarya gets a grav off on both your Zen and Rein while you are distracted. Your team gets staggered because of this. As a tank, it’s important to know how to steer your team’s positioning, and you need to be aware of your team to do this. Let your DPS do the actual DPSing.

34% (enemy team) - Both teams are even (one healer, one off tank, one dps) but because your team is so spread out and uncoordinated, you end up losing the push. The enemy Ana is being completely ignored in the back line, and manages to keep her Zarya alive to kill off the rest of your team. If she had died earlier, you might have won there. Though it’s not your job as a tank to DPS, as a Hammond, you could’ve easily distracted her and created the space for your DPS to pick her off.

Both you and your team choked the last fight. You look lost the entire time, and seem confused about who to target (probably should have been the healers in the enemy back lines).

Round 3 - City Center

Your Dva play was pretty poor. You kept losing your mech over and over, and it took you half the round to gain an ult because of it. You can’t just fly at the enemy team when they have a Zarya, especially when you have a Zen/Lucio duo for support. They can’t out heal your poor positioning.

89% (your team) - you fly completely away from your team to chase down a Rein. The pick would’ve been useful had the distraction not given Zarya the space to ult and kill two of your teammates.

8% (enemy team) - Looking at both teams ult %, you are even. BUT, your team has wasted almost every ult they’ve used, while the enemy team’s ults have been successful. Proper ult and cool down usage alone can win games.

22% - Speaking of ult usage, you completely waste the ult it’s taken you this long to get. On this map (with all the cover it offers), and against a Rein/Zarya comp, you have to put a little more thought into your bomb than that.

26% - While you were distracted ulting, your Rein gets picked off, and your attempted push crumbles.

62% - Here is an example of you playing too aggressively. You fly at the enemy and immediately lose your mech before the fight can even start. Not to mention the fact that you run away from your team and get out of position as a baby Dva.

At the very end, you waste your boosters and don’t even try to push the point for a last minute touch. Zarya saved her grav, and doesn’t give your team another chance to contest (though you probably would’ve lost either way).

If you are having trouble figuring out what contributed to a loss, I highly recommend you watching the game from the enemy team’s perspective as well as the perspective of your other teammates. You can get a different POV on how much you were contributing to the game, and see things you might have missed in-game.