How to manage iCloud without mixing the library from two iPhones

I have two iPhones, one for personal use (iPhone 8) and another for work (12 Pro Max).

I already have iCloud with a 2T storage package, but so far, I only activated it for the iPhone 8.

When I also activate iCloud for my 12 Pro Max, the photos are automatically uploaded to the iCloud photo, where then I can open and see the photo taken with my 12 Pro Max in my iPhone 8 or from anywhere using my iCloud.

Which is great! But I hate it because now, the photo taken with 12 Pro Max - which are the photo related to my works only, are mixed with my photo taken with my iPhone 8.

So, when I open my photo, I will see my family photo and also my work photo in the same folder.

So far, I have manually created the library and separated it. But it's a tiring manual process.

Is there any way to activate 2 or more iPhone into the same iCloud system but automatically separate the photo in the different libraries?