IT WORKED AND I DO NOT KNOW WHY!!!
i switch all of the enemy character components collision channel object type to (Pawn) AND IT WORKED!!!
thank you so much @Mind-Brain but please if you can elaborate on why did this work that woulkd be great :,)
Edit: i found that my player character was set to block the custom channel that i created ._.
but still i do not know why the other enemy characters were blocking each other
Another Edit: tried setting my player character to ignore the custom channel and it still did not work and now im dizzy