There are parallels to Fischer but if you want that movie "Pawn Sacrifice" is a decent movie.
As for realism when it comes to chess, as a (former - covid bleh) competitive league player they absolutely nailed the "feel" of the Chess world for me, better than anything else I've seen - yes they compressed the games and showed players moving far too quickly but that was a necessary compromise - hard to show a 7 hour game in real time as a TV show.
The camaraderie and eccentricities of the Chess world where displayed really well.
As for realism when it comes to chess, as a (former - covid bleh) competitive league player they absolutely nailed the "feel" of the Chess world for me, better than anything else I've seen - yes they compressed the games and showed players moving far too quickly but that was a necessary compromise - hard to show a 7 hour game in real time as a TV show.
The camaraderie and eccentricities of the Chess world where displayed really well.