accidentally restarted the wrong drive

Hello everyone,

I was just setting up my new MacBook air. I backed up my data from my old MacBook using a portable Crusial SSD. To copy my files from the external SSD drive to the internal Macintosh SSD drive, I started the laptop using recovery mode, then I might have accidentally highlighted the wrong drive and clicked restored. I think I had highlighted my internal drive and restored it, now I realized that this is not what I intended to do and this was not the way to do it. But anyways, when I restarted the laptop, it did not work and a couple of question marks symbols emerged in the screen. I googled the issue, and got around it by reinstalling Mac operating system from recovery mode. I think because the portable SSD which got the internal drive data wiped off in the restoring process does not have an operating system to start with.

1.) I managed to start the computer, but I realized that everything is identical to my old laptop (e.g., even the language flag = USA as it appeared in my old Mac, even though it used by a UK before I made this process). So, I am not sure if this actually a good or a bad sign?

2.) Is there any luck reversing this process (by transferring files from the portable SSD the right way)?

2.) My internal startup disk (I think it used be named macintosh SSD) is now named after my external portable SSD (X8 SSD). It looks like also that there are two internal drives (X8 SSD with a finder symbol and X8 SSD-data with a home symbol). The connection for both is PCI-express, and both have different available storage. The APFS roles for X8 SSD is "system grouped with X8 SSD" and for the SSD-data is "data grouped with X8 SSD". The PCI info from system information stated that "This computer doesn’t contain any PCI cards or devices. If you installed or connected a PCI card or device, make sure it is properly installed." Again, could you please advise if there something odd in the whole "accidental restarting process" that caused any of this. Should I reset the computer again?

I am so sorry for the lengthy email, and would highly appreciate any help please

Thanks in advance for your assistance