I’m open minded. If you can share some links for me to read because the stuff I’m finding doesn’t seem legit to me. By legit I mean other government agencies speaking on this aside from mostly NASA. Especially from other countries.
MUFON is an international UFO investigation organization that is probably the largest and most well known:
Home
At the Mutual UFO Network (MUFON), we’re deeply involved in unraveling the enigmas of the cosmos, from sightings to alien abductions and the formation of crop circles. Unlike Enigma Labs and the National UFO Reporting Center (NUFORC) who also take submissions, MUFON actually investigates into...
mufon.com
I think you're severely limiting yourself by only considering government agencies as legitimate though, but here's a wiki list (that you might have seen):
Brazil
Canada
France
Soviet Union
United Kingdom
List of investigations of UFOs by governments - Wikipedia
en.wikipedia.org