Quest Difficulty?

So.. uhh... I'm getting beaten as hell. Playing medium difficulty. I'm still probably a beginner to Magic but I'm doing sooo baaad.
The problem is I can't put a decent deck together. The cards I win are random, the cards in shops are random - it seems impossible to even get 2+ of ANY card on purpose.
After 14 wins, the decks I meet completely destroy me. Without multiples of some decent cards, I can't build a specialized deck and their decks are basically perfect. And since I can barely afford one deck, I get beaten by any deck that counters mine, cause I can't swap to another.
Also WTF is up with money? I make enough for one booster in the same time I get 8 boosters from playing wtf.
Any advice would be helpful, but don't tell me to lower the difficulty or cheat (play less than allowed cards) etc. I'm too proud.
The problem is I can't put a decent deck together. The cards I win are random, the cards in shops are random - it seems impossible to even get 2+ of ANY card on purpose.
After 14 wins, the decks I meet completely destroy me. Without multiples of some decent cards, I can't build a specialized deck and their decks are basically perfect. And since I can barely afford one deck, I get beaten by any deck that counters mine, cause I can't swap to another.
Also WTF is up with money? I make enough for one booster in the same time I get 8 boosters from playing wtf.
Any advice would be helpful, but don't tell me to lower the difficulty or cheat (play less than allowed cards) etc. I'm too proud.