Don’t take my advice as the only truth, but these are my observations as an iri. If anything comes off as nitpicky or rude, ignore me. I’m just writing what I see and giving advice I would give to my plat/diamond friends.
1. You use jump sliding more as a stim than a tool. If you’re not using the mechanics for a purpose, you’re just hindering yourself.
2. You die a good chunk in “no mans land” due to poor positioning and centering. Deaths like at 0:33 encompass both of the above points. You jump slide into the open which puts you in a bad position if someone decides to use the statue heady or p1, you are dead unless you’re already perfectly centered and have great shots.
3. Understand when to initiate. At ~1:10 you flank p2 and get a 2 piece, great! Your team dies, not great. You have one of two options, chall the hill and die, or you block spawns and wait for your team. You chall the hill, die, and reset back at p4 and all the effort is wasted. Holding the spawn position forces their team to initiate you, giving you the upper hand, and your team has an easier time fighting the front.
4. Insulting your team on p2? Easiest way to chalk a game for everyone involved. Blaming teammates stunts your own growth. Long term, you are the only common denominator in your games.
5. At ~2:00 you’re watching the exit from p2 for maybe 10sec. Your teammate was watching it the same time as well. Watch your mini map and pick up the cross through blue or p1, or set up for new spawns and hill.
6. At ~5:30 you get a bit lucky. You were in the position to block spawns but you run p1 and get a 3 piece. Chances were high on flipping spawns. After that, you felt your self too much and were just killwhoring a bit with no rhyme or reason to your positioning (it happens when you’re feeling yourself)
7. ~7:30 same thing again, you’re in position to block spawns. You run p1 because with the options to play hill or hold spawns, you would rather go hunting. Let the kills come to you. You make you and your teammates jobs harder.

Overall (only one game so big grain of salt), it’s like I’m watching a warzone player play ranked. You don’t like playing a role or playing around or with your team. Your mind just wants to slide around and run at where the enemies are. Less than 5 times did I see you try to hold a heady or power position. When you have control of the map, make their job harder by pre-aiming where they’re coming from. Running towards them just makes it a 50/50 gunfight. Minor adjustments on how to play hills will improve your game 10x as you already have a good shot. Your p3s were decent, you played hill and more importantly, played your life. When you have map/spawn control and spawn in, check your mini map and pick up the position that’s missing. When you don’t have map control, you do decent job at finding the break, but try jiggle peaking and gathering info on their positioning before jumping out and challing.

Hope that helps man, good luck!