I use KDenLive. I don't really do small simple tools. Eventually you always wind up wanting one or two more advanced features. The simple tools don't prevent

I use KDenLive. I don't really do small simple tools. Eventually you always wind up wanting one or two more advanced features. The simple tools don't prevent needing to learn more complex ones, nor are they significantly faster to use in most cases, so I tend to not really use lightweight apps. Plus, with some categories, the small simple tools are actually harder to use and slightly dangerous(See dd vs Etcher). A video editor won't overwrite a whole disk, but if you're concerned with malware, I would generally trust something I've already heard of rather than something obscure enough that you have to ask on HN to find it.