F-Droid still has some big tasks in order to be useable for the general public, when comparing it with e.g. Google Play Store.
For example, if you search it for "browser", Firefox will not show up because
A) It's called Fennec
B) The F-Droid search seems to be exact infix search, and Fennec's title is "Fennec F-Droid -- Browse the web", in which "Browser" does not appear, only "browse". So it doesn't find it.
In general, the search has no clue what a "browser" is, and cannot use it for ranking, so in practice you need to scroll a lot in F-Droid until you find what you seek.
For example, if you search it for "browser", Firefox will not show up because
A) It's called Fennec
B) The F-Droid search seems to be exact infix search, and Fennec's title is "Fennec F-Droid -- Browse the web", in which "Browser" does not appear, only "browse". So it doesn't find it.
In general, the search has no clue what a "browser" is, and cannot use it for ranking, so in practice you need to scroll a lot in F-Droid until you find what you seek.