Cowmangler and airstrike replaced the blackbox awhile back with the nerf. My go to is always either CM + Conch and whip Conch and equalizer Batallion's and equalizer And Batallion's and marker gardener makes it a free gunboats lol
I use OBS to record footage. I make sure to split discord, game audio, and myself into separate audio tracks. I use DaVinci Resolve to edit the footage. Its a free to use editing software. They have a paid version of DaVinci Resolve that has some extra visual effects for you to use, however you don't need the paid version. The free version is perfectly fine and is what I have been using.