hardware seems solid, software is so old even SSL certificates are out of date. I downloaded the ISRG Root X1 certificate to update them and even then stock safari doesn’t work with many webpages, including apple’s.
recently I updated to security patches released in 2017 and that’s about all I can do with this notebook.
I don’t see my model listed on OpenCore Legacy Patcher
If you know of any way to upgrade the software, let me know.
Otherwise, wiping it and installing a linux distro seems the way to go
It will run macOS 11 Big Sur, which isn’t fully out of date yet.
https://support.apple.com/en-us/102662 “How to download and install macOS”
You will want to install via USB probably. See "use a bootable installer " on the link above.
I would wipe/install.