DaVinci Resolve also has a free version that’s a fully-featured editor with nothing locked behind a paywall, the benefit from buying the paid version is you get an actual upgrade in functionality over the already-pretty-powerful free version.
However it’s still a proprietary app so if that bothers you, then KdenLive seems like a good FOSS alternative to that.
I thought for sure the free version of DR was still a fully-featured suite and didn’t paywall anything ala Adobe, and what you got with the paid version was an actual upgrade over an already pretty powerful app.