The first objective when you start the game is to know how to homogenize your deck, so that it is as optimized as possible, and effective in any event. In general, a deck is composed as follows:
-25 monsters
-15 magic / traps

-15 cards from extra decks

But you can of course add more, or take away.

The primary objective of a deck is to assemble cards of the same archetype, or of the same name ... so that the latter is effective.

To homogenize your deck, choose an archetype that you like, and then develop your deck using cards that are similar to the latter, of the same name or of the same type so that your deck is effective, but above all intended. . For your first deck, you can search the database for cards of the same type.

The goal here is to lay the foundations of your deck, which you will create YOURSELF. If you want to play simplistic, konami already provides you with premade decks.

You can also use cards directly related to your monsters from the deck in question. let's take the example here of the "mode/assault" deck, you can use other cards such as "psionic refector" which will allow you to look for an "assault mode activation"

In the current yugioh meta, many possibilities are available to you, but also to your opponent if he has a well-built deck. For this many "golem" cards, that is to say cards created on purpose to annoy the opponent, exist. Here are the best known pictures, it is imperative or at least very strongly advised to have some in your deck.
The usefulness of negates can help you win a fight, it can deactivate a monster's effect, etc., which is why integrating them into your deck is strongly recommended.

Magic cards and traps are everywhere, and each archetype has its own set of cards, which can be negated. here I have a "marincess" deck and this "marincess wave" card allows me to deactivate the effect of an opponent's monster if I have a link monster on the field! efficient !

There are many types of decks you can encounter and create. Some will play on invocations (marincess, farce-gamin...) others will play on ritual / synchro / xyz invocations. You may even encounter "surprise" decks, which are none other than decks composed of magic/traps that will be highly unpleasant to you.
YOU CHOOSE AND ADAPT (x