is herobrine real? or not today i will answer your questions about herobrine ok lets start

the start
Herobrine was a creepypasta first originating around 2010. The basics of the story are that someone started up a single-player world, only to sometimes notice a steve-like figure in the distance, but with washed out eyes. Whenever the player spotted him, the figure would run away

who is herobrine?
herobrine is a entity who some believe is notch's brother

how did minecraft respond to the herobrine myth
well notch himself who was the owner of minecraft at the time responded by saying this

notch-
Herobrine does not, and never has been part of Minecraft, nor do I
have a dead brother It's possible some mods might include a Herobrine character, and some
players might play tricks on other players to make them think they saw
Herobrine, but the story behind the character is not true in any way.

and some youtubers fake it like they dont even show proof or the seed they use of the herobrine sightings and they fake it hard wich makes it easy to proof its fake i myself have used the herobrine seed on java and bedrock and it was normal nothing out of the ordinary its just a normal world

the answer
no herobrine is not real