Vector and video is fine by me. I actively use inkscape got making figures, and edit a lot of video for my YouTube channel too. FOSS video is indeed a bit of a mess. Blender is by far the most powerful, but not at all user friendly. Luckily, there’s some very good tutorials for it on YouTube, so I figured out how to use it reasonably well at one point. I used to use it extensively for a while, but I stopped because it takes too much time to set up and do right. Shotcut always crashes on me, but I like the interface. Flowblade never worked well for me. Pitivi didn’t run the one time I tried it out. Right now I tend to use Kdenlive. I’m not over the moon in love with it, but it’s reasonably easy to use and it works. Another project to keep in the fold would be AVIdemux. It only does a handful of things, but it does them very well.