Mmcblk0p and partitioning

I am currently struggling with installing Arch into a Chromebook 4. I am trying to partition my drive so I can install Arch into the device. How can I either A) Delete these partitions? B) Is there a possibility I did something wrong and is it/how can I fix it?

I have also seen this thread an was wondering if I follow one of the answers provided.

I am a relatively new Linux user. Any help would be kindly accepted. Thank you for your help c: