From reading on a couple of other posts with similar problem, it looks like the recommendation was to save the wallet.dat and delete and restart everything.
Probably to start from the scratch is the best advice you have found so far as reindex-chainstate takes the painful time and doesn't guarantee that it will coupу with the problem.
I found myself in similar situation and reindex-chainste didn't help thus I wasted the time trying to use it to avoid IBD.
When starting from scratch don't forget to put down into bitcoin.conf the following entries: dbcache=1/4 RAM (for 8 GB dbcache=2048, while for 16 GB dbcache=4096) and blocksonly=1 to sync a bit faster.