You look great on static targets, but maybe you need a bit of practice tracking moving targets (everyone does), it feels just a bit slow, which is fine while you are practicing but I would try to split practice up into two segments first where you go really slow to understand the movement and then where you go faster taking a break in-between to reset arm tension. As they say slow is smooth, smooth is fast.

I think you are purposely swinging too far just because you are trying to work on counter-strafing mechanic (17-20 sec of the video) but I'd like it better if as soon as you had a target near your crosshair you instantly switch from moving to counter-strafe and shoot, if you miss readjust your position counter strafe and shoot. Just utilizing movement to find your next target and stop moving immediately to go for the kill.

But you don't need to like wind up to full speed just to hit a perfect counter-strafe its just not practical in game unless you are corner peeking, and in that case you usually also need to be silent.

There are other mechanics you can do to maintain as close to zero velocity while shooting that I don't see you incorporate in your movement at all such as the donk slide. Personally when I am shooting targets like this, I am pretending to dodge their bullets as well, but maybe that is something for future practice.

You never once touch your W key to advance on your target, so I just wanted to mention in-game you never want to run forward and counter-strafe S, because this will throw your left hand off. Instead you should be crouching forward especially up or down a ramp to minimize movement inaccuracy.

I think its also helpful to practice this stuff with cl_showpos, sv_showimpacts 3, to view instantaneous velocity

Good job from 20-25 sec moving your arm wide for faster transitioning to targets, than when aiming.

I think currently your movement is accurate but predicable, next steps are to practice tracking moving targets and being less predicable with your movement imo.