I also installed fiber a while ago after being told "this isn't hard" by Michael Stapelberg's post [1]. Luckily I managed to get by with patch cables; a 30m cables really goes a long way! I even managed to get a duplex LC through a 16mm conduit with a pretty tight 90° bend, but just with lube, quite some force and luck.

I can just recommend going for it if you're curious. Cables and tranceivers really aren't expensive from fs.com (though their sales people may start bothering you).

Edit: And old, used network cards from ebay, of course.

[1]: https://michael.stapelberg.ch/posts/2020-08-09-fiber-link-ho...