Hello, i'm newbie in this game and i need ur advice.
i'm newbie in this game and still level 1. this far my team play good at cup but i have problem with my league.
I try my best to build my team with high quality, but i'm confuse which formation would be the best for my player. i'm curious my team rate for my level is high enough but i'm sometime lose or draw by team with lower rate quality.

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And i'm wonder what should i do with my highest value player. i'm training him a lot and he's still 19 with high attack skill but his statistic is disappointed me. almost all his game rating 4-5. what should i do with him, sell him or keep him in my team.
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please help me, i need advice.
sorry if there's some mistake on my word. my english is pretty bad T_T.