Best country for dropshipping?

[Marysis]

Hey everyone, I'm currently doing dropshipping in Brazil and now I'm considering expanding to international markets. I'm unsure which country to start with though. Should I focus on the USA, Canada, the UK, or maybe a specific country in Europe? Or should I target all of Europe?

One important detail is that I only advertise on Google. I'd appreciate any insights or recommendations you might have on this matter.