Any of you play a GM?

simuls? like a simulation? I meant actually face them themselves.

In simuls, yes.

I have play with a GM ( my teacher) many times

And tomorrow I will play with Vishy Anand

I've played 2 or 3, depending on whether one of them counts for purposes of your question. In college, the advisor of our chess club was Milan Vukcevich. He only reached FM in OTB play because he devoted his life mainly to teaching as a university professor, but he was clearly GM strength. Here's where it gets fuzzy: he was a GM of chess composition, considered one of the best problem composers ever. If he counts because of his composing GM title, the number is 3, because we played dozens of games at the club though never in a rated game.

One evening at the chess club, his old friend from Yugoslavia -- GM Svetozar Gligorić -- came to visit. I played a game against him at G30. Again, not rated. Gligorić won, to the surprise of nobody.

The only rated game against a GM was in 1992 in a tournament in Maryland. He was a minor GM from the Philippines whose name I don't even remember. I had never heard of him and haven't heard of him since. I played so badly that it's embarrassing to think about it. Unfortunately, my scoresheets from those days were lost somewhere along the way, so I'll never know who that GM was.

NM Coach-Bill has been offering free simuls for members of Free Video Lessons here on Chess.com 

https://www.chess.com/club/nm-coach-bills-free-video-lessons

I had 2 lessons by GM Gerhard Schebler (when living in Thailand). Excellent value, less than $ 20 back then. 

TBH, I suck, big time and wonder, what makes higher ated players crush beginners. Is that an ego thing?

Ha. I used to think the same years ago. "Simul" is short for "simultaneous" and not "simulation." 

A chess simul is where a strong player (typically a titled player) plays multiple games at the same time. Usually the room is set up with tables, chess boards and chairs around the perimeter of the room. The titled player stands in the center of the room, then makes a move at board 1; walks over to board 2, makes a move and so on in a circle. Some simuls involve many players playing the titled player at once; "many" easily being 30+ players at once.

Play a GM?

I prefer Lc0 over Stockfish but either is usually available if I wish to get crushed.

Its pretty good seeing them beat each other though.

Lc0 vs Stockfish