It might benefit you to think more about your immediate situation (what's happening in the match) rather than whether you think you're going to win or not.
Jumping off this. It may seem intuitive to want to be engaged in constant thought while you're playing, but that is not the case. Think of walking/driving/breathing/any sort of semi-automatic activity you do. You breathe naturally and the process works, but you don't ever consider yourself as someone who is "good" at breathing, do you? You never walked down a hallway and said to yourself "damn, I won the **** out of this hallway, I objectively walked this hallway in the best manor possible," have you? No, you just do that stuff without thinking because your mind/body connection is
very strong and you don't need to devote any mental task-managing to those activities.
This is how you must be at Smash. Just as you trust your legs to carry you down the hallway without thinking, so you must trust your hands, your eyes, and your experiences to see you through the match, independent of the input of your ego (the part of your brain that begins to light up and say "you're losing! you're losing! ahhhhhh!!!").
If this all sounds very vague and abstract, honestly it's not: focus is a vital skill but it is not inherent, and it does require practice. Leading to my next point:
And another thibg that confuses me:I love music, and it makes stuff more funner, but whatever I play Warioware ir whatever omega (Wii U), where no music plays, I do better all of a sudden? I feel it should do the opposite?
This basically supports the point I'm trying to make. Music conjures up all kinds of mental and emotional associations in the listener. It engages the mind. This is usually a good thing, but when you're playing Smash with the intent to win, you want your mind engaged on one thing and one thing only: the match.
When you play Wario Ware, you're playing without any music to flood your mind with distracting sensations. Now, this works differently for different people; some people thrive while listening to music, and specifically bring headphones with them to tournaments in order to
increase their focus. When you have your own music, you have a greater degree of control over what kinds of sensations you will experience during the match. So although you might be getting distracted by the default stage music, you might try listening to something relaxing from your own collection next time you hop on For Glory, and see if that improves your focus.
You want to give yourself a point of focus to return to whenever you start to feel your thoughts creep back in, even if these are positive thoughts; my personal bane is when I have control of the match, and my ego brain begins to notice and tell me how good I'm doing... and just like that, my flow is broken, personal judgments begin to cloud my thought process, and things don't end well, even though I was "positive thinking". However, if I have some music on in the background, when I feel my mind start to wander I just return my attention to the flow of the music, the instrumentation, some specific element of the piece... usually I am able to melt back into the match. It may be cliche, but honestly I like to listen to classical -- no distracting lyrics, and there's a flow to the classics that seems to really calibrate my brain like nothing else.
Your focal point doesn't have to be music, but it should be something independent of your conscious thought process. I like to make myself look at the character models in intense detail, really take in the movement of every attack and movement of limb. There's no objective (i.e analyze the movement of the characters for weaknesses), it's simply a process for returning my mind to a fixed point and abandoning any kind of evaluation that may be going on in my head ("I'm playing well," "I suck right now," "I'm losing to a crappy player," etc.).
Hope this makes sense... play to achieve a state of focus and excellence, don't play to win (or to avoid losing).
