is there any way i can find a person with just the discord id? ex: instagram, twitter, facebook etc.. I didn't find any example of Dox, OSINT about discord itself

Off of just their ID? No.
With a little more effort or a little more information, then yes.
Check out SpiderfootHX and discord token loggers (Both require some social engineering, but I'm sure you can figure that out if you're dedicated enough)