How do I merge a volume group together with my system hard drive?

If you all look at the enclosed image above, you can see that I've merged four hard drives into one volume group called MQ. I did this in order to try to have my system hard drive (KINGSTON SUV400S) merged with the volume group MQ so that it would show up as one big system drive. The reason why I want to do this is so I can install all the additional graphics drivers I need for Ollama to run my AI model on my GPU and not just my CPU, as it is now. The reason for why I'm asking this question is because the system drive ran out of storage space when I installed the graphics drivers which made the computer unbootable for a while. Can someone give me directions on how to do this, or is this impossible?