There's a forum rule that doesn't allow multiple consecutive posts unless you are allowed (by another forum rule) to bump a thread even when the last post is yours. You can perfectly answer and cite multiple other posts in just one of yours. It's no rocket science...
Now to your topic:
You don't provide any details how you mined your coins and which software you used. What assistance do you expect with such poor details?
So you had no useful or verified backups. Even if you actually mined until 2017, I'm surprised how careless you treated your private keys. Anyway, you know that yourself.
That, and it was easy to make a paper backup back then. It was just a matter of writing down or printing a number of characters. An average English word is about 5 characters in length, so if you make a 12-word backup phrase, you're going to write out or somehow save 60 characters. A private key isn't much more difficult, if not easier.
If it was so easy, then where are your "easy" backups? Bitcoin Core doesn't use mnemonic recovery words. Other HD wallets do.
What kind of wallet did you use for your mining address(es)?
Do you actually know which address(es) hold your mined coins?
What kind of mining gear did you use for mining?
Which mining software was used, which mining pool did you use?
Come on, how serious are you? No details provided by you mostly at all, btw.