Basically I have a group that plays Smash Bros and Rivals of Aether, I want a software that I can use to cut and put together clips from their tournament matches (with premission of the original streamers of course), preferably free but if I need to pay I'll pay.
There's OpenShot, an open source application that runs on Windows, Linux, and Mac.
It's very versatile and relatively easy to use
A couple of Python based components that should be able to do the job nicely for you:
- youtube-dl a command line interface to download YouTube videos given the URL
- MoviePy a python video manipulation module that uses FFMPEG, (which it downloads and installs for you if necessary on first use), behind the scenes to cut, stitch, etc., videos.
These items are all free, gratis & Open Source, and cross platform.