Probably same issue as the other thread;
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You had pulseaudio installed before installing godot
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You chose to install an optional pipewire plugin with godot (which requires pipewire, which conflicts with pulseaudio)
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Pulseaudio was uninstalled and pipewire was installed
If so, to revert back to pulseaudio try installing the manjaro-pulse meta package. Although you may run into this issue in which case follow the advice in that thread. If sound still isn’t working after that delete pulseaudio configs as described in the last post in that thread.