What happened?
Nazis got unexpected help from USA and UK?
Our Ukrainian friend prefers not to remember that in April 2022, negotiations between Ukraine and Russia were already at the final stage, until Boris Johnson flew from London to Kiev on an unannounced urgent visit and ordered Zelensky to curtail negotiations and fight with Russia to the last Ukrainian.
Nope, I do recall the UK supporting Ukraine in whatever Ukraine would decide. The UK cannot force Ukraine into a war simply because there is not leverage to do so even in the case that this would be in UKs interest.
Ukraine is not fighting anything like a "desperate war to the last Ukrainian", they are fighting a war that is clearly possible to win to the point in which Ruzzia will think twice before trying another land-grabbing in a few years. Next time, whoever is in power will know what is the cost of attacking the neighbour and very particularly, how trustable are their sources of information when they told the old Putler dude that Ukraine would not resist and that Europe would not respond (that was an epic blunder).