How to earn DEC in Silver 3

So i started playing this game, because in my opinion it has huge potential to go all the way up.
I understand that i need to rent cards (if you dont have enough Capital to buy the cards) to get the power for Silver 3.

When you hit Silver 3, you start earning DEC from game to game. Your Winrate starts with 100% and goes down after every game.

So lets say you spend 100 DEC on Card renting and your Power lvl is at 1000, until now you just spend 1$ for the Cards. Now what happens is really interesting!

If you win now games in Silver 3 you get 5-9 DEC every time. If your Winrate is full at 100% you get more DEC. But dont play until it is at 0, because then it costs more to rent the cards insteat of earning some.

-> The main rule is 100 - 75 % !

So you start playing at 100 and get 8-9 DEC after a win.
-> After calculation you need 10 -> better 15 wins to EARN DEC after you covered your rent costs.

Lets make an Example:

Card Rental Costs: 100 DEC

15 Wins x Averrage DEC per win: 8 DEC = 120 DEC

-> you made 20 DEC profit.

its important to have a clear view of your costs and your earnings, if you do, you can really earn daily on this game and play it knowing it will bring you something sweet back in the future.

God bless you guys, have a nice day to all of you!