Splinterlands: Advancing in Foundations

My daily routine since last month has been to complete my Foundations fights till I earn the 3 packs limit each day.
This helps me organically build up my collection without having to spend my own money on ramping it up.
It used to be quite comfortable till I was playing Silver I and Gold III but now as I advanced to Gold II the difficulty level has clearly gone up and I can see the impact on my win rate.
I am getting tempted to spend some money to level up my cards but gonna wait out this season to see I get the cards I need from the daily chests.

What I have noticed during the last few days is that I seem to be getting goldfoil cards more frequently.
I know that in Modern format you get higher rewards for using goldfoil in the battles but with Foundations I am not really sure if it makes a difference. I am still gonna keep collecting as many goldfoils as possible.

Target is to have all my common goldfoil cards upgraded to level 4 and try collecting more Rare and Epic Goldfoils.
I doubt this season I will be able to advance beyond Gold II but let's see if I get lucky.