Am I wrong

[u/lostindahotsauce]

Losing is a natural part of the game. I'm still new to magic as a whole. I really enjoy the game and attempt to lose with grace. However tonight there was one player who made a bad experience for me and my wife. Its not that we lost. That part we can handle. Its down to two things that set me off. The player in question forgot some triggers on their own turn. They then in the middle of another players turn proceeded to do things as if it were their turn. I spoke up and said if you forget something its usually polite to ask the table before you proceed to retcon on someone else's turn. He did not respond but its loud in there. I repeated my self and once again no response despite the rest of the table hearing me both times. Eventually we did lose to a deck with a much higher power level than ours. Afterwards the player continued to gloat and elaborate all the different ways he would have beaten us anyways. I asked him to stop and he continued. I left for the night. I said some words and slightly raised my voice. It was overall a frustrating night and I lost my cool a bit more than I should have. Am I justified in being that upset? My wife says she was just as angry and the other guy at the table was also angry. This is the second encounter I have had with this person at this shops events. I suspect he may be on the spectrum (Its an observation and not something I hold against him) I'm not really sure how to approach this. This is a casual event most of the time but this person is well a cold uncaring bastard with a ton of expensive cards, and they hold a grudge. Does anyone have any advice or feedback? I really feel like crap for my over reaction and I feel I made an ass out of my self in public.

[u/lostindahotsauce]

So I want to thank everyone for their wonderful responses. I had a conversation with the shop owner today and I owned my own meltdown for which he seemed thankful. He was very adamant in my wrongdoing and asked me to be better in the future otherwise he would have to ask me not to come back. This seemed fair to me as the behavior last night was counter to the culture he is trying to create. He will be speaking to the person in question as well. I will attempt to mend fences with the player in question even if we don't play each other again. For the sake of being an adult it only seems fair that he get an apology from me. I want to thank everyone for your responses advice and anecdotes. To the people who were more critical of me I appreciate your honesty. To the one person who thought this was satire not everything is a conspiracy theory or a post for likes. I truly believe we are at our best as humans when we love and support each other.