recovery of old wallet.dat file

[Bitcoin]

recovery of old wallet.dat file

Back in 2012, I mined for a bit on my computer in Slush pool.  I didn't get much, like .11 coins so I quit.
In 2018 I went to slush pool and sent my sats to my bitcoin core wallet then tried to open it, but my hard drive was too small to download the blockchain and it errored out, so I let it sit.  in late 2021, I saved the wallet.dat file, downloaded the new Bitcoin_qt and the entire blockchain on a new 64 bit machine, with a large drive, and tried to drop the wallet.dat file into the folder to replace the blank one.  Bitcoin core doesn't see it so now I am at a loss.  I am not a command line guy nor do I know how to proceed.... should I chalk the sats up as lost and move on?

Source: recovery of old wallet.dat file