Indeed. Most apps I got on the homepage, mostly fast cash lending apps, were developed from China, and then outsourced its customer-based services to my country.
Recent Firefox Android releases reload a recently-visited website whenever I’m switching an app and go back to browser after a few seconds. Sometimes, it doesn’t load. I’ve been using Firefox since 2021, and this was never happened to me before.
Play Store doing this since September, at least in my region (SE Asia). If you disabled personalized ads on your Google Account, Play Store homepage displays ads that are frequently installed from your country/state.
Just use third-party DNS resolvers with ad-blocking feature.