Luke had a social life though; Biggs, Tank and his other friends outta know about the Jedi.
Also shouldn’t there be footage of Jedi that existed? Surely some beings would have had video documentation of them due to the Clone Wars being so expansive. And if not from that then from the Jedi being general peace keepers. The Empire removing the footage Holonet isn’t a suitable excuse to cover this up.
Should there be footage though? Does the SW galaxy get news like we do? Did the Jedi get media attention?
SW operates more on the logic of a fantasy series than it does regular Sci-fi. Despite all the future tech, people live very old fashioned lives. I don’t think Luke had a TV or Internet.
We’re only assuming that the Jedi were “well known”. Sure people may have been aware of their existence, but I’ve never gotten the impression that anyone (other than politicians, generals, etc.) knew exactly what they were capable of. Most people in the Galaxy probably assumed that their powers were just rumour even before the Empire.