Can I invest online in an ETF that tracks the Nasdaq in Ireland?

I’m an Irish citizen and have recently moved to Ireland to work after living most of my life in South Africa. I have pension investments in South Africa and in Ireland, as well as other investments. I’m looking to sell those non-pension investments which aren’t performing very well, and invest some of the proceeds in an index ETF that tracks the NASDAQ Top 100 in the US to diversify my mostly local retirement investments a bit. I’m looking to do this long term, 5 years minimum, more likely 10+, and I’m specifically looking for a low fee online brokerage that provides access to an ETF that tracks NASDAQ. Something like E-Trade or Robinhood, but I can’t use them since I don’t have a US address. I’ve also found Degiro and iShares, but neither of them seem to offer an ETF that tracks NASDAQ specifically.