A lot of the retro games I’ve played in the last few years were things I found exploring the libraries of console generations I missed out on, like the PS1.
Other times I’ve chased things that I specifically remember playing in my youth, like stuff on Windows 3.1 (Gahan Wilson’s Ultimate Haunted House is an underrated gem)
Beyond that, I’ll often just browse the new entries uploaded to myabandonware.com and see what catches my eye. That’s how I found Prey (2006) which was an absolute blast.