Can't open Samsung RAW (.SRW) files in Photos

It isn't just the brand, it's every camera model has a different RAW format, because the sensors, camera hardware, and available software routines are different from camera to camera. My Nikon Z5 RAW is supported, but my Z8 is not, for instance. You can see a list of supported formats here:

Digital camera RAW formats supported by iOS 18, iPadOS 18, macOS Sequoia, and visionOS 2 - Apple Support

I don't think you can sit and wait for Apple to provide the support for new RAW formats-- I imagine they might have to open a new department to keep up with all the new cameras, and I doubt it's something that seems very rewarding.

For me, I import my Z8 RAW files and do initial edits in Nikon's NX Studio (free) and/or Adobe Lightroom (NOT free) and then import the resulting jpgs to Photos to finish up. Samsung may have its own native software to help out.

Or, you can convert your RAW files to a more accessible DNG format from Adobe with their (Free!) DNG Converter. I haven't used it, but it supposedly preserves all the data from a camera's RAW file, and DNG is compatible with Photos.

I should add that, if you're really interested in the advantages of using RAW camera data, Photos doesn't add much advantage. If I were only using Photos (like I do for the majority of my pictures), then I would use the camera's jpgs. As I said, when I think a picture could benefit from going back to the RAW data, I use my camera maker's native software, which understands the Nikon, and Adobe's Lightroom Classic which is way more powerful.

As Richard replied, Apple no longer updates macOS to support every RAW flavor in the planet right away or ever.

...but inquiring minds want to know if you could put a sample image to some cloud service so we could test it...

With my mind on this RAW support thing, I realized that a pet peeve has been the inability to see a picture's image in the thumbnails in Finder lists and in Finder icon views. And I want to be able to use QuickLook to picture the RAW file I want.

I just discovered the app Camera RawX ($8) in the App store. It turns the generic thumbnails into tiny images, and it enables QuickLook so that I can press the space bar and see the picture. It's fast, because the embedded jpgs are used. Of course, it doesn't make the RAW files compatible with editors like Photos and Preview, and I thought that

8 bucks seemed like a lot for this bit. But I've sprung for it, and I like that my RAW files now behave like normal ones in Finder.