I am not sure where you are currently as far as levels. For example have you made it to the Bronze3 or Bronze2 League?
Have you started to buy or rent cards to improve your deck?
Have you gone through the Splinterlands Academy? The Splinterlands Academy
To win battles it is mainly dependant on your line up. So your first card should be a strong card, or as strong as the current Mana Limit will allow for. For a minimum try for a monster with a melee attack of 2, a speed of 3, and life of 4 or above. Try for a shielded monster. The second position should be a monster with reach a speed of two and a melee attack of two. I had to buy a card to fill that position for both my Earth and Water Splinters. try to get as many sneaks and snipes as you can in the line up and close it with a tank.
I recommend you follow 
I just followed you and will look for your future posts. What ever you do don't quit the best is yet to come :-)
RE: Struggling Beginner in need of assistance.