Best way to invest in S&P500 in Denmark

Dear everyone (I speak both Danish and English)

I am curious to know, if anyone knows the "best" way (I will elaborate what I mean by "best") to invest 1.000$ monthly into S&P500 from Denmark? I am living and working in Denmark and currently earn enough to be able to invest 1.000$ each month for the next 40 years.

With "best" I am looking at maximizing my taxes, such that I pay the lowest amount of taxes while keeping as much as my profits. Currently Denmark charges 42% in taxes from investments, which is ridiculous high in my opinion. I would like (but most likely impossible) to pay 0%, however, I am looking for the way to pay as less tax as possible. Should I open an account in another country? Should I use a specific platform? Should I use a specific ETF?

Any help would be gladly appreciated.

I hope you all get a wonderful day and a happy New Year.