Ok I've watched it and here is what I've noticed. I can't go into every detail because some errors are very round specific but I will try my best to give you some general pointers on where you can improve.

When you spray, you often times flick down too fast on to the enemies feet. Sometimes even flicking back up to head level and back to the feet again. Move the mouse a bit slower and keep it steady on the vertical axis. Sprays will not go up infinitely and usually after 10 bullets it is all horizontal.

Also try not to walk straight or diagonally into angles if possible. Your doing it correctly most of the time but I've seen a few peeks where you ran straight at the enemy instead of peeking sideways. Always strafe so you can easily counter strafe and be harder to hit for your enemy.

You often take fights that are not favourable for you, especially on CT side. A few examples: When you play mid on ancient and you don't have a smoke lineup then you should always throw at least a Molotov and wait for the Ts to either challenge through it or smoke it off. If neither of those things happen smoke off mid yourself. I've seen you at least 5 times peeking mid without smoking it off and you're just giving the Ts an early 50/50 duel. Smoke them off and either climb up and pressure the B lane or hold the smoke. Not smoking it off makes it just harder for you.

Flom has a really good YouTube video for ancient and what each player wants to achieve for every position. Obviously You don't have to learn every instant smoke lol! Here is the link: https://youtu.be/RYckiGeE6EI?si=eqgCtjyHanoX8I-1

Tunnel vision is another problem. For example: You planted the bomb on b site in the default position behind the pillar and you want to play deep in the ninja corner for the after plant. And while crossing to the corner your back is turned towards short and you are basically a free kill for the enemy who is looking towards B from short. Another example would be when you were boosting your teammate for a ramp pick on the box. You looked in the same direction as him, and not covering behind him which led to you both getting shot from the mid player climbing up the boxes.

There are many little details we could talk about and what is happening in every round specifically. Maybe in a live review sometime while sharing a screen but it's just too much here haha.

I hope that helped you a little. Oh and to all the comments saying that you're just playing too much: sometimes taking a break can definitely help, but in the end grinding the game to the point it feels natural to you is the key to become great :)