

Need the status of the levels on the individual outputs. These may be selected as the primary output right now. Try disabling this config and restart.
Next steps are checking mixers to make sure your levels are set for the intended output (sometimes they get auto-muted when switching output devices).
Try pavucontrol
and qasmixer
to toggle things on and off.
If Earlyoom helped you with OS stability, then you have memory problems. That means you’re running more in memory processes than your system memory can handle before the kernel tries to save itself by killing procs using a lot of memory.
Get more memory if possible, enable a larger swap partition, or run fewer things.