Stuck on a starting problem

First post and admittedly not a Prius expert. We have a 2013 Prius with 190,000 miles. It won’t start unless jumped. After it jumps, it drives fine. However, regardless of how long it runs or is driven, as soon as it’s turned back off, it will not start again without being jumped. Nothing comes on the dashboard and all electrical is out as well, until jumped. The auxiliary battery is only a couple years old and has tested good. I ran diagnostics with the doctor Prius app and the hybrid battery appears to be ok as far as I can tell. I checked all of the fuses recommended various troubleshooting websites, including fusable link assembly, and those appear OK. I’ve reached the end of my troubleshooting abilities, and my husband (who is decently car savvy on much older vehicles) does not even want to touch the hybrid. We’re needing to get rid of it quickly, and I was hoping to fix whatever the problem is and sell it as a working vehicle, but my husband is lobbying for a cheap dump at a salvage yard. I’m having a hard time dumping it for $750 knowing that the batteries, catalytic converter, and probably a bunch of other stuff has more value than that. I’m just currently not in a place to go through the process of parting it out and selling a bit by bit. Does anyone have any other ideas on what could cause this issue?