I'm voting for kdenlive. And krita for image creation, I use both (although my wife uses the tiktok editor whatever it's called on her phone and her videos are great, so there's that..)
Came here for the blender mention. I don't edit video often, but blender is fine for basic work! (and maybe more but I'm not a good enough editor to know)
Yep, was gonna say this, at least if you're on linux.
A bit of a confusing UI, but it doesn't seem to be as resource intensive as other editors with similar feature sets.
(Though I do have very little experience with video editors/editing in general... shotcut 'clicked' for me after a few hours of just brute force fucking about with no manual or anything)
This stuff drives me crazy. I'm not an artisty type, but sometimes I wanna enhance a photo, enlarge something, remove a background, on layer images, so I search up "free online whatever tool," go through the upload and whatever, and then all of a sudden it's all "nah, I changed my mind. the thing I told you I did I'm gonna have to charge you for or make you sign up for an account or whatever."
If I wanted to go through all that, I'd already have a dang tool installed! Thankfully after enough of these roadblocks, I've got a pretty good arsenal of free utilities, though nothing to help you out here. It looks like some other comments do though!