u/aimixin - originally from r/GenZhou
Yes.

With about 75% voter turnout, 96% of the voters in Luhansk voted to secede (source), and 89% of the voters in Donetsk voted to secede (source).

In fact, even Crimea, which western sources claimed their referendum was faked, would later go onto admit that 82% of people in Crimea support it. That's Washington Post. Not a Russian source.

Of course, not all Ukrainians want to secede, or even all of east Ukraine. Just some pockets in the east, in Donbas and Crimea.