One manager has asked "how do you gain your resource?"

Here is my answer,

Firstly, by doing so, it will bring a whole new experience and interested for me. Like you have your own goal to achieve. From my side of view, I have gotten all the achievements. It's time for me to open a new chapter of Top Eleven.

Secondly, from the first day of this game, I already used multiple formations to counter my opponents. During my 16 seasons, it's kind a well success for me. but no match is guarantee a win. My one counter and order may not work against some formations, so, there is a plan B, plan C. Underestimate the opponent is a NO, NO.

So, it's an easy answer to your question "how do you gain from resources?"
Interest, experiment, more learning experiences, more ideas, play more match each day, etc.