But OBS would be fine too. The flatpak from flathub, add the pipewire plugins and you even have that.
Just try? I can recommend flatpaks (and dont bother with fedora flatpaks, add flathub in the discover settings) to try a bunch of software as it does not touch your system
If you’re installing applications from the default repositories, you’re probably okay security-wise at least if that’s what you mean by trustworthy. In that sense, it’s okay to just try.
For audio specifically, I would do Audacity or Ardour depending on how complex your needs are. If you want a simple multi-track with some simple effects and tools that allow you to edit and export/encode, then Audacity. If you want some more complex audio production than that, then Ardour.