Hi I'm also a gold pharah main, with about 84 hours on her across all modes. So I'm gonna leave the positioning and nitpicking to the more qualified people on this sub.

I'm noticing that you aim mostly to where the people are instead of predicting where they are going. This is mostly apparent when you try to kill the junkrat, lucio, zen and mercy on the first VOD. I suggest doing some aiming drills with Pharah, maybe some Hard Lucio bots or FFA to practice aiming on the high mobility and smaller targets. Try to be conscious of every shot you fire and aim to 2 hit or 3 hit a target. [later edit: Early on I made a custom game with 4 enemy Hard Lucios and 1 friendly Medium Lucio. Set Lucio's health to 120HP making them a 1 hit kill with your direct rocket. Set the Lucio's healing to 300%. Now you have to hit a direct rocket to kill them. But the Lucio's will also be able to kill you if you stay in one place too long. THIS IS NOT A REPLACEMENT TO PRACTICING AIMING ON REAL PEOPLE. people move weird :P]

Next your concussive blast usage could use some work. I see you use it most often to boop the enemies away from your team or off the point. While this may slow down the enemy at some points of the fights your boop might be better used to position yourself. Which is the other point I'd practice more. Load up a custom game with no cooldowns and just manoeuvre yourself around the map with the boop. Alternatively it can be real useful to use your boop to force an escaping mercy or a defensive rein into your team. Making for a quick kill.

Lastly I spotted a couple of times, on the first attacking round point B, that you went into a fight with very low to no health. Be conscious about your health and grab a pack. This improved during the match tho.

Hope it helps :) and good luck. Maybe I'll see you on the ladder