seriously i found him but he didn't kill me
i was chilling in my lava castle when i found upside down crosses all around...then i saw him blowing up my stables (where horses live) and then i set up a command block trap so when ever he went inside my castle property he'd teleport to a underground bedrock dungeon/prison and that's where he is right now. so he is trapped right now and he is guarded by iron golems 100 blocks below the ground and if he ever escapes and goes into my castle property again he'll die and if he manages to escape that i'm guarded by like at least 50 iron golems.