I use kdenlive, though I find it has lot of odd quircks and limitations once you try to do anything too advanced. The one I really find annoying is that when you speed up or slow down video, it does not do the audio. Even programs from the 90's could do that.
Transparency is also done weirdly. You can't just make something transparent, it has to be linked to a track that it's transparent with. So you can only have one clip at a time be transparent over a given clip. if that makes sense. Ex: if you want to have two separate small clips with transparency at the same time, you can't. Lot of other weird oddities like that.
Oh and another pet peeve is the files use full paths for assets. So you can't move a project folder to another location and be able to open it.