You've definitely got some speed. Nice fast and relaxed hands. Good posture in your stance, good chin position and nice rotation. Generally good footwork, except for a few things.
You have a bad habit of either stepping your rear leg too far or moving it before your front foot when you want to move forward.
In that gif you take two different steps that narrow your stance too much. Each of those is a moment of vulnerability where your balance and stability are weakened. It's ok to perform a less exaggerated form of this movement when you're hop stepping, but not to step that way. Keep the distance of your steps with both feet the same. You do a good job keeping your rear foot under you when you step in with the right hand, but if you step it too far under you then you're easy to knock back, even with a quick jab.
Your pivots could use some refinement. You crossed your feet on them occasionally.
Make sure you always move the left foot first when you're pivoting left. That position in the second frame isn't a good one. However, you didn't do this often. The more consistent problem was moving both feet at the same time.
I picked this example because it's easy to see. You adjust the left foot first, which is good, but then you pivot too far and the left foot keeps turning as the right foot spins around. You want your pivots to be more balanced and less committed than that. Adjust the left foot as far as it needs to go, then move the right foot. If you need to pivot further than the original adjustment, do it in two pivots. That way you stay in good position the entire time and can adjust as necessary. Here you can see both footwork mistakes in a subtler form:
I want to see you pivot to the right more. I know you were mostly practicing your ring cutting footwork, but your only consistent movement to the right was walk offs and hops back. When you did pivot right, it had the same problems as your pivots left:
This time the left foot moves first. When you go right, you move the right foot first. Also, I generally think you should practice pivoting that direction more often.
The punches are fast as I said, and you're getting good rotation on them. However, you're missing weight transfer and aren't really digging into the ground or sitting down on any of your shots. I don't know if that's because of the knee injury, but in general you're extremely upright. What's missing is your hips. Even when you worked a little head movement your hips looked stiff and straight. Get them bending as well as rotating and everything will look 10x better. Right now, your head is in the same spot almost the entire time. It should have subtle side to side motion as you punch, and it shouldn't be upright in the center all the time. It especially shouldn't pop up there when you pivot, which happens in the second gif I posted (the choppy one).
Finally, I'd like a little creativity with the combos. It was pretty much all jab to start it off, quick right straight or uppercut, maybe a left hook or left straight to finish. Mix it up. Hook off the jab, double the jab up then throw the combo, work punches off your body jab, throw your jab then slip before attacking, etc. Also, sometimes throw your jab stiff before the combo as well. A lot of the time you were jabbing with your shoulders squared up because you were really just trying to throw a right hand. That can work to throw off the timing, but if you always jab like that before your right hand then it becomes easier to tell when the right hand is coming and when you're just throwing single jabs.
So overall, refine the footwork, get the hips working so that you can get low and improve your mechanics, mix it up with the combinations. Good luck with your recovery and your training!