I'm no geek and I do keep an old discarded PC with W7 32 to run itunes and photoshop elements in case I need them for something. No internet, no antivirus, no updates. Still the odd frustration with drivers.
But my study computer has Linux Mint 19 Cinnamon. Best advice I can give you is to try it on an old machine and see if you like it. EVERYTHING works, straight out of the box: printers, scanners, office suite, internet, etc.
It's free to download but if you don't fancy that just buy a DVD from ebay for a couple of quid. No bother with updates and antivirus.
Not so good if all you do is play games, but simple as pie for everything else and it will find all your old docs and pics if you save them somewhere.........
https://www.linuxmint.com/rel_tara_c...n_whatsnew.php Search mint dvd cinnamon on ebay
Loads of online tutorials. And a grand cheaper than a mac.