I think you should stick it out. Save up the gran to get a pre-built. Looking for warriors is a pretty good gowen file. You should invest in that but a few options are available so ask around the forums, Gon has helped me quite a bit and the guides available are well written. The problem i was having was with flow. I couldn't really steadily pump out a steady amount of cards in a level 3 lawtia file called NBK. I have two other files that I have, one a modified gowen file that is level 1/2 rush style and i have the prebuilt lawt rush file... well four including my starter (i decided to go with gowen since it was such a good starter file). The game has some balancing issues and a lot of decks are op but every card game has them. If you played magic the gathering, one of the most op decks ever was Uba-Stax. I made one myself and boy, if played right you were nearly unbeatable. Same concept is applied to all card games and really you should be thankful how easy it is to get free gran. Even if you don't live in the states plenty of options, survey wise is available to get the free gran in order to purchase the right stuff. Considering if this game was in reality you would be paying money to play since a TCG is built around buying in order to acquire the cards. Alteil is fun, basically free and they update on a regular basis even though sometimes somethings that needs to be fix isn't and you always will run into the mods who are real busy bodies in the forums, of course I wouldn't be referring to Rom or anything (joking he's just over-zealous and cocky). To the point: keep pushing; don't give up, that's why people quit card games in general: they don't stick it out.
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