Avid is well known to those involved in video editing. It's the preferred tool of many in Hollywood and has been used to edit many of the biggest movies made. While pro level tools aren't very cheap, Avid is providing a new gateway to those looking to boost their video-editing power. Media Composer | First is an application that brings powerful video editing capability to everyone for the grand price of free.
It's not the complete Avid Media Composer by any stretch - it's missing a bunch of features but it has more than enough to get you going before deciding whether the full product is for you. It comes in macOS and Windows versions.
To access the Media Composer | First, you'll need to create an Avid Master Account.