>>35472510Evos are basically low power cards from the boxed legacy game. Your deck isn't even a good one and yeah it should be winning against his.
The best theme decks right now are garchomp and empoleon, with the matchup generally going to garchomp. A new set drops tomorrow and it's a little light on power. Ultra Prism and Burning Shadows have most the core cards with Guardians Rising existing mostly as the Tapu Lele GX lottery.
The GX cards are what most of the competitive decks focus around these days, with a line of GX attackers + 1 or 2 support mon lines + 1x or 2x Tapu Lele GX for consistency.
Buying singles either at a shop or online is the best way to put together a non-premade deck you want, popping packs is super hit/miss and really not worth it for most people.
Getting into the game mostly consists of finding a decent pool of support cards like Prof. Sycamore, Cynthia, Guzma, Acerola, N etc, some trainer cards, and then the mons you like. After your trainer pool is decent switching decks becomes a matter of just finding the mons you want.
You're welcome to post future questions here if you have specific ones
>>35470359 