First before playing against anyone go to practice mode and find a unit you like playing, type, playstyle, then check what cost is currently available... if you lose...
Then get good, how you may ask... Try again. Repeated play will give you a much better chance at learning then complaining... So remake your review you dumb-ass and don't Trash on something till you have atleast a day in the game...
Sincerely,
Your mother.