cloverdale/vancouver flea market?
facebook marketplace?
theres a bunch of fake/clone n64 games on ebay that work just like the real thing. i remember paying something like $25ish each for a clone copys of mario party 1-3 which is dope af on n64 lol
if you got the $$$ get a everdrive and you can download/store every game into cartridge/card.
https://krikzz.com/store/home/30-everdrive-64-v25.html