This is my third attempt at creating a trailer for my first indie title, Gravity. I just recorded actual game footage with Obs, then edited it using Kdenlive. Both are free and Open Source software.
You can find the old trailer, here. I hope the new one is a bit better.
The game is currently in Early Access and only being released to Google Play Sri Lanka.
I'd really appreciate any feedback. And if you've any questions about the game or the trailer itself, just ask.