I currently use Kdenlive to create my videos which is super simple to use. I have DaVinci installed though and will doubtless start using it when I have more time to learn it. I do have HandBreak to hand as well but generally don't need it as I have my Kdenlive outputs set to YouTube output sizing already.
I save the OBS output to a video file (or several if I've messed up mid recording!) and then add headings, background music and do edits in Kdenlive. Then upload to YT and add chapters, descriptions, cards, etc.
I also use ScreenToGif when creating quick animated screen captures. It is really good at minimising the captures and outputting to an animated gif format (tiny).
