"THEFIGHTINGGAMER" is kind of too many letters to put there without any spaces or other separation. I suggest making it TheFightingGamer whenever you use it all together so each word is noticeable.
BUT for this icon, i think it's better to avoid it altogether. It's too small to read when it's shrunken down into an actual icon. Just stick to TFG. Also pick a better font (try fontsquirrel or Google Fonts for free-to-use ones).
Actually, I suggest either picking different swords or a different background color, too, because the handles of the sword kind of get lost in the black when it shrinks down into your icon.