As a fellow user, with absolutely zero experience of the app crashing, I only step in to post since no one else has replied for a couple of days.
There are a few other forum posts from people who have experienced similar problems. They tend to mention that AP attempts to backup the database file if it corrupted. See for example the I lost my data…-thread. That thread mentions the path where the file is stored, as well as includes a link to a Github issue which has hundreds of comments which I have not read.
I hope you manage to sort it out! Sorry to not be able to be of more help.