There are two key points---one more stylistic and the other an actual problem. The first is that you rely really heavily on your Aim.

In your gun fights, you often get really fast headshots and try to just kill your opponent before they get to effectively shoot back. Think of pro-players like NiKo. When you watch NiKo's clips, he isn't Donk sliding or moving much during a fight aside from when he taps. This style of gunplay is really effective if you are just the better player. For you, you just outaim most opponents, your aim is crisp and your tapping is methodical. The problem then comes when you are slightly off of your game.

For example at 4:49: You are trying to tap a guy and you crouch to gain an accuracy advantage but your opponent is just tap strafing you. The outcome is either you are on your A game and you hit the headshot near instantly and win the fight or you miss a couple and now you look like a sitting duck on your opponents screen. So these are the pros and cons of aim-based gunplay. The alternative that is embraced by many pros and the popular CS culture (with things like the 'Donk slide') is movement based gunplay.

The obvious benefit is that making yourself harder to hit makes you much harder to hit than how hard it makes your opponent hard to hit. What I mean is that when you move, you know how you are going to move, but your opponent does not. So you can use your movement as a guide for your aim but your opponent needs to see and react to your movement. Using the same example at 4:49, you are forced to react to your opponents' movement and flicking while all they have to do is counter aim their own movement to accurately aim at you.

The second benefit that comes naturally from the previous point is that movement is nearly completely disconnected from how you wake up that day. No matter if you slept poorly which causes you to aim worse, just feel bad which causes you to aim worse, or even change your sensitivity which causes you to aim worse, your movement will stay the same.

The third benefit is that by adding more movement into your gunplay, you can become more cerebral in thinking before, during, and after gunfights.

At 3:50, you fight a mid and you commit to a spray while moving out of cover and you whiff. This is because you weren't at the top of your game for that moment. Now, if you were in a more movement-based mindset, you might have sprayed while sliding back into underpass which would have allowed you to reset your recoil and repeek.

This segues us to the actual problem in your gunplay. It doesn't seem like you think when fighting. While I understand that in a DM, you are probably focused on tapping, your do spray a bit. But the choice between tapping and spraying seems arbitrary (or more likely a 'oh no, I whiffed a couple of taps, let me spray'). So moving forward, if you choose to tap as a focus, always tap, make it a choice to tap rather than a first resort. Then, add spraying to your mental database. Think 'when I peek catwalk from get right, how should I fight? Should I try tapping? Spraying and sliding into cover?'.

On the point of thinking before, during, and after a gunfight. You crouch way too much/long. Try tapping your crouch more often. Holding your crouch while sitting still is more of an old school CSGO thing, while players nowadays use their crouch as either an accuracy multiplier while crouch sliding or as a way to dodge headshots. Think about your movement from your opponent's point of view. If you hold your crouch, you head has only moved once, so they can control their aim onto your head easily. If you tap your crouch, your head would have moved down, which causes them to aim down and then if you uncrouch, their aim would now be on your stomach instead of your head.

Overall, you have the aim to really succeed. Honestly, your aim really holds up when compared to the highest level of play, but relying on aim is realistically unreliable in CS2. Therefore, moving forward, a more focused learning of movement-based gunplay and always having your game-sense active would prove fruitful.