The UK question is less important, but neither Wales nor Northern Ireland has ever expressed any significant desire to leave the UK. Support for unification with England remains at around 70-80% in both countries. Only Scotland has a significant independence movement.
https://www.thejournal.ie/lord-ashcroft-irish-unification-poll-4804372-Sep2019/
Also Sinn Fein winning the latest elections? What a weird thing to say
People overrate that tbf, I think GMAC's poll numbers are accurate in Northern Ireland. Sinn Fein didn't win the election, they were the largest party. They just ended up there without gaining many votes because the DUP collapsed. So that is significant but it's not some wave of enthusiasm for a united Ireland.