PC Gaming

It depends on the tasks you are planning to do.

Here is a list with a bunch https://wiki.archlinux.org/title/List_of_applications/Multimedia#Video_editors I tested most of them. While they all work fine, I had better experience with the flatpak versions when available.

If you just want to do some quick cutting, trimming or merging - LosslessCut https://mifi.no/losslesscut/

I use ffmpeg from terminal for quick stuff that I do often. Like resizing a video, cutting, getting an image from a frame.

Lightworks and DaVinci resolve are industry standard, but require a license to use most of it. The problem with their free version is the limitation of input and output formats. Ideal if you are making movies/going professional. I prefer DaVinci Resolve, keep an eye for hardware sale, sometimes it comes with a license bundled - Speed Editor being the cheapest.

Kdenlive is well-rounded, from the open source is the most robust, and with most maintainers. I use it mostly for gameplay and to add voice over to videos.

For recording voice over and sound FX, there is nothing better than Ardour https://ardour.org/

Natron is great for Visual FX, you can also use Blender for pretty much everything.