Losing you learn that you need to make changes and to know your deck better and by losing you may also learn to be a better duelist
Winning you tend to get cockier which allows you to make mistakes but at the same time would boost your confidence
both losing and winning have there pros and cons but both help with shaping you to become a better faster smarter duelist the only thing i can say for now is never be too cocky and to never give up until the last life point drops
good luck to all veterans and new comers alike if u need help making decks or testing decks or just need lessons hit m up on one o my 4 profiles
Arcanine1992
1992arcanine
Sniper1992
or
1992Sniper