After looking at the other video it helps give an idea of your posture, the kart’s attitude etc. It’s just simply a combination of little mistakes, lack of consistency, and too much steering input. Some corners you’re too early on the apex, some corners you aren’t grabbing enough curb. You just need more seat time, to make it all come together.
For example, 25:05 you put in a huge steering input, grabbed way too much curb and upset the kart hard. To me that looks like you just aren’t super familiar with the way the kart is going to react, so you overcompensate with a big input. That comes from lack of comfortability with the limits of the kart and lack of seat time.
25:25 you charge this corner way too hard and throw yourself off-line for the next corner. That comes from not fully understanding the corner complexes yet. You know which corner is which and maybe how to attack each corner individually, but you aren’t thinking of them in terms of groups of corners and how to get through the section fast rather than the one corner.
26:10 look at how much later this guy apexes that corner, and how he grabs more curb than you, setting him up much better for the following right-hander. You swing out way wide since you miss the apex in the left-hander. Again, that’s him understanding the section of corners better and emphasizing speed through the section rather than the corner itself.
That’s just a few things I noticed from this quick clip.
I’ve been driving for 18 years and still learn things every time I go to the track. Don’t stress too much about winning or being the quickest yet, you’re just not there yet in terms of seat time; it looks like you still haven’t fully mastered this track. Go out there and try different lines, different braking points, different postures and steering techniques and see how they feel, see what works for different corner sections and what doesn’t, and build up a set of knowledge and skills on how the kart will react given a specific input.
And remember that the brain processes memories and techniques overnight while you sleep. This is why we try something new over and over one day and can’t quite get it, but we sleep on it and come back and it all clicks suddenly. You just need more time to process the things you’re learning so you can build a knowledge base.