Yeah his bid was never realistic. We count on the prime minister for international diplomacy and representation. For which you need to be pretty much undisputed internationally.
I can't imagine Geert traveling to Qatar to broker a ceasefire between Israel and Hamas when he is well known internationally for his anti-muslim stance.
Being a proper prime minister requires you to set aside your convictions and your interests and stepping up for all citizens, muslim or not. There's a lot of doubt he will be able to take on that role.
We're in an interesting political stalemate right now, with current polls showing Wilders' party (the PVV) at around 50% of voters, while his current mandate is only around 23% of votes. He would likely be best served by repeat elections. Which is why we're seeing things play out this way. So far none of the current parties that are set to form a cabinet have proposed their leader take on the role.
Which is understandable because we're heading for a historical form of government where there is no real coalition. Meaning the PM will be under increased pressure as backing from coalition partners is not guaranteed. We might up recruiting someone with an impartial political stake as PM.