Being successful at YouTube, at least at the start, is due mostly to pure luck. For the average channel, it usually requires something to go viral. For a channel based on GT7, the market is saturated, so there's almost zero chance of getting a decent following.
Regarding your replay, here's some thoughts. And here's a map to help with turn numbers:
View attachment 1365057
T1: On approach, your
right tires should be on the curb (left tires off the track). After the turn, you should aim again to have your right tires on the curb, and left tires off the track. Use all the track (which you will hear me say a lot).
T7: On approach, keep your right tires on the curb (in this case, you probably don't want your left tires off the track), and don't start turing until the curb ends. Then turn your wheels either before, or right as you start to brake. If that causes you to turn too quickly, then brake a little later.
T9: On approach, your right tires should be on the curb and your left tires off the track.
T10: After T9, try to get your right tires should be on the curb. It's a little tricky to get them there after T9, but that's the goal.
That should get you started. Remember, generally speaking, the wider you can make the turn, the better. In other words, outside to inside to outside.