Was doing multiple things at the time, so not sure about this—I think I restarted it but then it wouldn’t start up again. Holding down the power button didn’t help, nor did holding down the power button along with either the up or down volume for a few seconds. Plugging it in, it does make the “started charging” noise or whatever.
Would be much obliged for any suggestions on how to get this working again!
You can use an adapter for the headphone jack, just keep an eye out for compatibility, because the DACs are apparently no longer inside the phone and need to be wired correctly inside the adapter. For my Pixel6 I use one from Anker: https://www.amazon.com/-/dp/B08Z3B5QL3