editing software

Hi, I've just made a video which explain how to remove the fisheye effect on an action cam video: I use Hitfilm Express 3 video, a great freeware for video editing and more https://hitfilm.com/express

I'm looking for the simplest, easiest free video editing software for a newbie, i.e., for me. I only need to trim the beginning and end of videos, cut out stuff in the middle, cut or boost the audio here and there, join clips together and insert the occasional photo. I've never edited any...