Looks like fun fights.
I'll add some general comments to yours.
On the rolling scissors a more vertical loop limits your forward travel better than chopping throttle.
An oblique merge loop adds or reduces turning room and keeps more speed over the top. A vertical loop has more vertical travel so you keep less speed over the top and it's easier to get hung up.
You chopped throttle to "help" your turn when you were nose down and low E. You needed WEP for maneuvering speed. You want to decrease radius with max available g not low speed. Turning speed is only too high when it's above corner speed. A good rule of thumb is if you can't black out you aren't too fast and don't need to pull power.
Energy is speed and altitude. Altitude generally has more E than speed. Instead of cutting throttle, go up to slow down and keep more E. There are times to cut throttle, like when you're stalled and can't roll against the torque, but usually it's best to keep your speed up and climb to slow down.
