Really? You just made me much more interested in NZ politics, if I'm finally allowed to have an opinion and express that with a vote.
Is there a policy-comparison website? I think I know who I admire most, but I think it's unlikely that they'll ever get elected outside of a coalition. So it makes more sense to vote strategically for the constituency where I'm living.
It's almost never possible for any party to govern without a coalition (since we changed from FPP to MMP in 1996). The 2020 election was the first time since 1993 that any party won an outright majority of the seats, and they had unique circumstances to thank: pandemic success and an imploding main opposition party. This perhaps-overly-detailed article will give you a good picture: https://en.wikipedia.org/wiki/2020_New_Zealand_general_elect...
There are a few comparison sites. https://policy.nz/ is one, but note that there are a bunch of minor parties that didn't get any seats (some of which just popped up for this election), so use the Wikipedia article above to get an idea of who actually mattered in the end.