Can someone explain me this, I am not the most brilliant player. Details below the post

What about it?

I am trying to learn Ruy Lopez and start knowing at least enough openings for me to not be trapped in a single playstyle. I was watching videos abt it and all suggested this as the main line: Nf6, O-O Why? Doesn't this give a free pawn? The videos I watched didn't even cover the variation of Knight taking the pawn, I suppose it something obvious? When I do the King-Tower thingie in the analyzer the move Nxe4 suddenly stops being suggested, I don't see it and it is killing me, please help lmao

Why is this brilliant

briliant by castling

Made my first brilliant move that i checked the game on

What about it?

Im 1k blitz, he was 500 blitz. Even my chess coach said this is a beautiful combination

PSA: Remember to turn on Auto-Queen when playing Blitz or Bullet. I almost threw my phone across my room.

Easily my nuttiest move ever (I’m 400-50

Found this mate in 3, white to play

How?

What about it?

Can somebody explain how this is a stalemate? I’m white. Surely this is checkmate.

My best checkmate

To have a happy Father’s Day

To flip the desk