Blender has a video editor as part of its suite. If you are not familiar with video editing software there are a lot of tutorials on YouTube to get you started. Otherwise the building blocks are there and you can build off of your previous knowledge and likely get the results you are looking for.

Maybe this one? [https://danielgamedev14.itch.io/a-survival-game]

Seconded. I got a mouth guard to stop grinding my teeth and since using it my wife (and smartwatch) suggest my snoring has stopped. Double win!

If you want to look into modding you can check out the NEW Nexus Mods App (Linux friendly version) [https://nexus-mods.github.io/NexusMods.App/] It currently has limited game support but Cyberpunk 2077 and Stardew Valley are good!

What version of Blender do you have running? You can try to add yourself to the video and render group which may get it working. In terminal:

sudo usermod -a -G video [user] 
sudo usermod -a -G render [user]