Road To Splinterlands Champions

Hi all.
I am new here and i will write down my road to Splinterlands Champions league. I hope to find someone can help me to improve my skills in this game or maybe a support from this Community.

I am in Splinterlands since september.
My account name is @magicodoz.
Actually i sit in bronze league due to my 2195 CP and my skills, i have only 50% win ratio.
Since the CL comes out i struggle to rank up to silver III rating. This is a big slowdown for my road because my rewards are less.
I try to increase my CP buying some reward cards sometimes but i think that the best strategy is to buy a lvl 2 summoners and max some cards. What do you think i need to speed up my road to Champions?
Also i found that Obsidian and Keyla summoner are very strong but i struggle to choose the right one because one counter the other. Sometimes i feel that every game in bronze league is scissor paper game and it is very frustrating, what do you think?

I will update you guys with my road🚀, i do not have much experience in this game but i can also help you guys with my thought.
Any advice is welcome💪