what is happening to me?

i was completely winning and then i proceeded to miss mate in 2... just howwww?.. this is my game:

Oh dear that is very tragic

Happens! And that's where we learn and evolve to avoid mistakes that we did already!!

Played way too fast. The position was still sharp and required some care. Rxf2+ was the easiest way, but also 34... Bd5 seemed much safer than exf5.

Well, you only focused on your plan. You didn't do the "Checks, Captures, Threats" thing... and missed out on their only checking move. You have too much time left on the clock.

It's so easy to spot the mistakes in other players' games after they have been done... :-)

thanks... i kinda relaxed because i was winning

I have a solution to this. I spend a minimum of 3 minutes per move in an otb game whenever I'm winning no exceptions. The loss is understandable since the position was very sharp and the board was open. You can try the "cat and mouse method" where you slowly restrict your opponent in a winning position and take no risks and attempt no tactics until you are absolutely sure. This makes the opponent very miserable throughout the process and more likely to resign. For example when your opponent played g4 you could've played Bd3 and take control of the diagonal and still guarantee winning white's queenside pawns. When your position is winning, your opponent has nothing to lose and hence try to play more dangerous moves. It's like Real Madrid in the champions league. It's never over until all of your opponents counterplay is restricted.

thanks for the advice...

wow johan u became so strong
anyways we all have some bad moments

thanks