One of my son’s was wait listed at LB a few years ago, So, we toured the place and hung out on campus for while they kept him in limbo - I remember it being eerily quiet for a school day. I have family in the SD area, and were there a couple weeks ago (just before things shut down for the Covid crisis.) We’ve got several neighbors who attended both so, my impressions are pretty fresh and echoed by people I trust with deeper exposure.
I’d walk the campuses and neighborhoods near both now - Even closed, you’ll find students in the area you can talk to - from a respectful distance of course. I guarantee it will be easier to find SDSU students than LB.