2021 Outback - electronics come on but engine won't start

asking if any obvious trouble shooting steps I could take as my 2021 Outback wouldn't start up this morning.

Electronics seem to come online, parking break actuates, but I hear at most a half second of the start seeming to attempt to engage and nothing happens.

Assuming low battery or starter went out, but open to any wisdom y'all might have. Going to pull battery and trickle charge it tonight as I don't have a multimeter handy to prove its voltage. If not the battery I'm assuming it'd be the starter having gone out? relatively low mileage though and usually drive with the auto-on/off disabled so the starter hasn't gotten as much wear as might've.

Appreciate any ideas.