Edit fan edit on laptop?

I've had a fan page for my favorite series on Instagram for a few weeks and got a laptop for Christmas. So I got the idea to edit my fan edits with my laptop. Unfortunately, I don't know which editing program can be used to get good fan edits. Maybe someone knows a good cutting program that is easy to use, has many effects and is free. It should also be for a Windows laptop.

Please: https://www.shotcut.org/howtos/getting-started/Erste_Schritte_mit_Shotcut.pdf