That happens to everyone who first starts out playing, you're not alone. Just keep at it and learn from each of your games!
Some Zekrom based decks are:
ZPST (Zekrom/Pachirisu/Shaymin/Tornadus)
ZPS
Zekrom/Eelektrik
I would suggest Zekrom/Eels because it is cheaper ($.50 Eelektrik vs. $20 Pachirisu) and it has a better late game. A basic start for the deck would be:
4 Zekrom
4-4
Eelektrik
3
Tornadus
Tornadus is a pretty good counter for fighting types, and it can charge up Zekrom with its Hurricane attack. As for Supporter/Trainers:
4 Juniper
4 Sage's Training
Both of these Supporters help you discard your lightning energies, which you can then use Eelektrik to charge your bench.
4 Dual Ball
3 Junk Arm
4 Pokemon Catcher
2 Switch
Dual Balls are pretty cheap and are really good. Junk Arm gets your energies into the discard, and let's you abuse Catcher. Catcher is for dragging stuff up.
10 Lightning
4 DCE (Double Colorless Energy)
That's 53 cards right there. Some more cards to consider fitting in:
PONT/
N(More draw support)
PlusPower
Pokemon Communication
1
Cleffa
1
Super Rod
Hope it helps! :thumb: