With the Modern theme, the search opens useful before the visitor types: a Popular Searches list built from what real visitors search for, and the visitor’s own Recent Searches. Both have toggles in Elevated › Site Search › Settings › Theme & Style when Modern is selected, and both are on by default.
Popular and recent searches are Modern theme features. Select Modern under Theme & Style (see Classic vs Modern Search Themes).
With Modern selected, Theme & Style shows a Popular searches toggle and a Recent searches toggle (“Show user’s recent searches before typing”). Both are on by default; the counts shown default to five each.
Save, then open the search on the frontend without typing:

The lists never appear. They are Modern theme features and only render before the visitor types. In Classic, the search opens empty by design.
Popular searches look sparse. The list grows from real visitor searches, so a fresh install starts empty and fills with traffic.