The best example I had of the same (started with Amstrad CPC, then Amiga, PC ... software engineer for almost two decades).

I couldn't find "Find on page" on iOS/Safari, so I did a Google search on how to so it - result snippet on Google was cut and actual results page was full page of forum replies, and I was having trouble finding it by just scrolling.

Now years later (and only Android) I forgot, it was something rather non intuitive where they've hidden that option.