How can I shave off more time? (beginner)

[u/therapture3]

I know I'm really inefficient but I have no idea what to change to fix it, the problems I can see are:

1. Altitude control on turns. I either drop too low after a turn and eat grass or I overcompensate and miss the gate. Even when neither of those happen I still go too low or too high and it affects my speed.

2. I'm too slow on the zigzag, but I don't know what to change in my controls to be better. If I tighten my turns then I lose too much altitude, if I widen my turns I lose too much speed.

3. My first lap is always better than my second, whch is evident in the video.

I probably have more problems that I can't even identify. I'm a beginner when it comes to racing but I've flown drones for other purposes for about a decade. My friend got 35 seconds and he owes me dinner if I get 34 and I'm really really hungry. Would appreciate any advice.

61 degree angle, 135 FOV