Not sure, I get them in france at the very least twice a week. Other people I know complain about the same thing.

I settled on never answering my phone if not in my contact list, if the caller is not a spammer they leave a voicemail.

I never get spam calls, but I do get a lot of spam SMS messages - also in Germany. (They're almost always fake 2FA activation messages from some bank I'm not a customer of)

It’s a huge problem in India. 10 times worse than US.