I met him a couple times, but he doesn't hang out anymore :/ good luck in your quest!! I can't give 你 any tips really because I saw him all over and in both the Nether/overworld but I totally believe he's real :33
He is not real he is fake I doubt 你 will ever find him. He is a 随意 character that 《我的世界》 made him up so its a lie. There's no new about finding Herobrine 或者 ever encountered with him and mostly is all lies
Get the Herobrine Mod and this is what 你 do go to the nether get 9 soulsand and go back to the overworld and place them In a 3x3 square go mining for 18 金牌 and turn in into 2 golden blocks and place them in the middle of the soulsands and finally get a netherrack and place it on 最佳, 返回页首 of the golden and finally light that nether rack up (Careful hero brine has 50 hearts so max out on armor and attacks)