Sure ok. Referendums in Odessa and other current Ukrainian controlled areas too. There is no way that even 10% of Crimea and Donbas would prefer current Ukrainian regime rule. A return to someone like Yanukovich would be hard to trust because of the massive betrayal he got from IMF/EU despite wanting to be closer to them.
I don’t know what your video is showing. The fact that there is, seemingly official, video surveillance could have alternate explanation. Perhaps all of the other election workers there are validating mail in ballots, and she then collects them to put in box? I don’t know anything.
Ukraine suspending elections means that they can’t win even with “motivated election rigging operatives”. Liberated regions of Ukraine have had normal local elections.
The liberated regions of Ukraine are those who have voted to join Russia. Only they have elections.
Though Zelensky now claims he was lying all along, in 2019 his election platform was to reign in the nazi problem and give autonomy to Donbas as per Minsk accords.