2 failed attempts

Just failed
My second try driving test - main cause was speeding. I also felt like the instructor had to justify his decision so it felt like he kept coming up with reasons. I feel so dejected especially since the driving school kept saying I should “speed up”. Maybe I over-shot their advice a little too much.
My question is, what do I do now? The driving school said I was ready but I scheduled the test myself. Do I schedule more classes? Do I schedule test in a new city myself? Or do I talk to the driving school to see if they can schedule the test for me? Any advice is so appreciated. Thank you.

You should never drive over the speed limit. If this was the only thing you failed at I would probably just take another test and try to focus on not driving too fast.
At most get one extra lesson, preferably one of those practice test ones, and focus on not going over the limit there. Perhaps ask the instructor to keep an eye on it too.