Okay well first off everyone has all sorts of formations but the won that works for me is 4.3.1.2 with my dr and dl with red arrows my mc with blue and my amc and st with red arrows...only lost one game with this formation and i have been on for about 12 days but its all about finding what suits you
as for leveling your skills goalkeepers should get defence only ... defenders should get mainly defence and a little bit of physical and mental .. midfielders should get a mainly attacking and physical and mental with abit of defence and attackers mainly attacking and physical
your goalkeepers go with the one thats 18 quality... hes younger and better so has much more potential
Maybe you need new strikers also with better shooting and finishing