There has been some discussion today before the Bitcoin Core PR review club session on the subject of Tor v3 support. I haven't been through the above answers to comment on whether any of it needs updating.
But Jon Atack pointed out on IRC some good additional resources on getting started with Tor. There is the Bitcoin wiki and the Bitcoin Core documentation....
What should I do with my crippled Bitcoin Core?
I would buy a new computer, and download and install a fresh copy of Bitcoin-core onto it, then replace the wallet.dat file using your backup copy and let Bitcoin core fully sync.
How can it be this unstable still after 10+ years?
I'd suspect something on your existing PC is causing issues. I'd remove the ...
You have the files here and can follow the instructions mentioned in below links to build: