Ukraine will never be part of NATO, maybe Western Ukraine when it's occupied by Poland, but Ukraine will never be part of NATO. NATO dissolution is more likely.
I see only a couple solutions possible. Your side returns home. You withdraw from Ukrainian land. Status quo returns. Or two, both sides negotiate. Russia keeps done Ukrainian land. In exchange Ukraine gets some security guarantees. The issue is here is that they won’t trust Russia based on your set off. Russian word is garbage. The only guarantee possible that I can see is one provided by NATO. Tell me another way for peace?
Barbos's delusions about complete occupation and destruction of Ukraine as a sovereign state aside, it's not like even Putin wants "peace". He wants a frozen conflict where he can undermine whatever part of Ukraine that remains. And NATO won't accept new members who are actively engaged in wars and territorial disputes because that would be an automatic triggering of chapter 5.
On the other hand, I don't see a formal NATO membership being a deal-breaker even for Ukraine. Security guarantees are primarily about maintaining the ability to defend itself, and that means continuing to move towards NATO standards, joint military exercises, and ensuring that if another war breaks out, they can receive assistance from the west. Chapter 5 would be icing on the cake, but I can imagine a world where Ukraine would be willing to use NATO membership as a bargaining chip if it can get something in exchange from Russia.
Delusions is a kind way of putting it.
Our resident Putin fanboy doesn't seem to grasp the fact that - no matter what the "end game" in Ukraine, even if it were Crimea and Donbass as "independent republics" - Vladimir's dreams of a "Greater Russia" are as dead as the ~100k soldiers he's planted in Ukraine so far. Right up until February of the soon-departed 2022, Russia was seen as still a near-peer to at least a few Western nations or at best a force to be reckoned with.
This war...sorry, "special military operation"...has exposed Russia as what Putin's former pal George W. Bush might describe as "all hat, no cattle." This was a strategic failure of epic proportions. Even if they manage to pull of a stalemate or a negotiated peace, Russia is done as a "world power."