In every local Yu-Gi-Oh community, players get the opportunity to make relationships such friends, rivals, enemies, buyers and sellers, but no matter how hard you try you cannot be everyone’s BEST friend. Players will always have greater friendships with others than you as much as you have greater friendships with others than them. You can determine the friendship when the group of players regularly hang out outside of the Yu-Gi-Oh community whether it be simply getting something to eat or catching a movie together, if a player is a friend to you in locals but you don’t do anything else together outside of it then you’re not friends. This is all stating the obvious but I just want to emphasize the difference between to the two.
In a competitive environment such as a regional, YCS, nationals, etc. It’s best to keep all information about yourself to a minimal. What I mean by this is don’t tell anyone what you’re playing and what your record is. It is a competitive tournament after all and no one is looking out for your best interest. The reason why you don’t want to share information with others is because the information can and will be spread. If your friend from locals comes up to you ask and what you’re playing and you tell them. I’m sure we all have had the “do you know what this guy is playing?” moment, so later on when you get paired up with either them or their “greater friend” they will be a step ahead by knowing the match up which puts you at a slight disadvantage. Everything will be easier if you advertise to everyone that you’re playing a deck your really not so you can have advantage over them and throw them off. An ideal example is telling someone you’re playing Spellbooks, get paired up with them, they win the die roll, thinking you’re playing Spellbooks they make a first turn Naturia Beast and pass then in reality you’re playing a Uria deck and set all traps to ruin their game.
If you have a perfect record by round 3 and someone ask what your record is, it’s better to tell them that you’re x-2 because it will eliminate their thought and worries of you in the tournament so they won’t care to know what deck you’re playing and information will spread less. Of course you can still win the match or event by sharing information about yourself but their is no reason to, especially in a competitive environment where everyone is trying to get ahead of you.
Advertising a wrong deck can also prevent you from being a target of theft. The money decks are usually the meta decks which has the most played, high demanding and valued cards but if you forget your deck box on a table it will be stolen regardless. “Friends from locals” (not all) are the type of players who would find and pick up the deck box and keep for their own personal gain then later give you props, high fives or sympathy for your loss the next day at locals. “Friends from and outside of locals” would pick up the box and say “Hey, this belongs to player X” and return it. So keep in mind and make sure you know who your friends really are, but in the end everyone is your competition and you should always look out for your own best interest.