I assume you captured this via a game recording device?
If so, these game capture devices don’t capture video content that
is edit friendly at all, And will pose the same issue you are now
having with any NLE you use.
Steve Rhoden (Cow Leader)
Film Maker & VFX Artist.
Owner of Filmex Creative Media.
Samples of my Work and Company can be seen here:
https://www.facebook.com/FilmexCreativeMedia