Unwrapping tricky cylinder I have a real pain to unwrap a quite complicated model.
The shape is a cylinder that is drilled with multiple holes trough its height. I modeled this part with fusion 360, then imported it as an .obj.

Please have a look at my screen as shown on picture to understand my issue. The unwrapping doesn't work as expected and I can't find a way to make it do what I want...
I was in a similar situation recently. Most online advice was "select one quad and then use the Follow Active Quads thingy", but that wasn't an option for my model.

What helped me was the Cylinder Projection unwrap method, with Direction set to "Align to Object" and both the "Correct Aspect" and "Scale to Bounds" checkboxes checked:


If the holes in your model aren't important and don't actually need to be in your UV map, make sure to deselect them first.