The Russian Federation is not trying to colonize Ukraine. Their goal is NATO neutrality, and annexation of the four oblasts, which are largely pro-Russian. This is a response to the ethnic repressions against Russians in the Donbass following the coup of Yanukovych in 2014, and the ensuing secession of Donetsk and Luhansk and the civil war that followed.
The war was never supposed to be over in days. This was circulated as a means to humiliate Russia, but all talks of an attack lasting days either came from many years before 2022, or from the west.
As for Putin rigging elections, this might be true, but we also know that he is legitimately popular in Russia. The nationalists are most popular, followed by the communists. The pro-western liberals like Navalny was are in the minority and have no real support base.