I don't know if infodog.com is just for the US, but that's how I've been finding shows. On the kennel club hosting the show's website, it will usually say 'open to the public' or 'closed to the public due to COVID'. On shows that are open to the public, there is usually an entry fee (the one I went to was $5/car). You'll want to find the show program, look at how many samoyeds are entered and when they're being judged. Show up like 1/2 hour before the samoyeds are scheduled, (it'll give you time to look around and get parked n stuff) and go to the ring where they're showing. There will be samoyed people near that ring anywhere from 5-20 minutes before samoyeds show. Find someone, and ask if they know of any samoyed breeders who are at the show. I usually got either: 'I'm a breeder but I'd love to answer your questions after we show' or 'see that lady in the red? she's been breeding for 30 years, go talk to her'.
Find what the most important health clearances are for samoyeds-for goldens, each dog should have hips, elbows, yearly eyes, and heart cleared by OFA. However, in some breeds, stuff like eyes is SUPER important, or thyroid, etc, so find what's important for your breed. The breeder should prove their dogs in some way (conformation, mushing, or some other venue), and should have easily available pedigrees and health info for their dogs. Usually, the best breeders don't have up to date websites, or have very old websites- this is because these people have been breeding for a loooong time and may not be the most tech savvy, and because they are too busy with their dogs to focus on updating their websites.
Here's a good article on talking to breeders:
https://thecaninechasm.com/how-to-contact-reputable-breeders-reputable-breeders-part-4/