I am going through the same deal looking for something different. I revived an old Lenovo a couple years ago. Couldn’t upgrade the processor so just maxed the memory at 16. New battery and charger. Installed Linux mint then umbuntu before settling on zorin os from Linux because that was the only one I could get my WiFi to work on. Then use Firefox. It’s simple and basic but slow. So as I look into something better I’m exploring what BlackOp mentioned. Another eBay seller I like but haven’t bought one of his computers is:
https://www.ebay.com/str/1530computersllc
He has all refurbished but exclusively Dell. None have the side keypad but his have either windows 10 or 11. Or Linux mint or unbuntu, etc. I’m thinking if I can’t find what I want in a refurbished/used Mac I might try asking this guy if I can get one of his Dell with both windows and Linux installed. eBay has a bunch of sellers hopefully we can get some posts in this thread on any personal experience with eBay or other sellers.