The car lost power, clutch and accelerator lowered and I pulled in?

It sounds like the BCM, or other control module is having a problem I would run a CAN scan on the car, you can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Here is one for about $99.00 if you need it:

https://amzn.to/3ZixY4v

here is more information on the problem:

The issue you experienced with your 2013 Opel Astra GTC where the pedals became frozen/stuck is indeed quite unusual. While it's difficult to provide a definitive diagnosis without inspecting the vehicle, I can offer a few possible explanations:

Hydraulic System: The hydraulic system in your vehicle controls the operation of the clutch and brake pedals. If there was a temporary loss of hydraulic pressure or a malfunction in the system, it could have caused the pedals to become stuck. However, it is puzzling that the pedals became unstuck after sitting for a while. It's worth checking the hydraulic fluid level and inspecting the hydraulic components for any signs of leaks or damage.

Mechanical Issue: There could be a mechanical problem with the linkage between the pedals and the corresponding components they control. This could include issues with the clutch master cylinder, clutch slave cylinder, or the linkages themselves. If there is excessive play or binding in these components, it could cause the pedals to become stuck intermittently.

Electrical Issue: While less likely, an electrical issue could potentially cause the symptoms you described. A fault in the wiring or sensors associated with the pedal operation could result in the pedals freezing or becoming unresponsive. However, this seems less likely if the problem resolves itself after a period of sitting.

Please go over these guides and get back to us.