Found online…

There is no word like “stati” in English. “Status” is originally a Latin noun
and in Latin it declines as a u-stem noun. So in Latin, the plural form of
“status” is also “status”. Another word of this sort is “virus”. The plural
of “virus” in Latin is “virus”. But now English people pluralize them as
“statuses” and “viruses”. In contrast with them, the Latin noun “alumnus”
declines as an o-stem noun, and the plural form is “alumni”, which is also
true in English.

Exciting, huh?

Tom