Hi bud and welcome to the most brilliant, annoying, fun, tear your xxxxxxg hair out game, and thats after the first couple of days!, can you put a picture up of your squad you where givern so we can help/advise you on your best formation!. We can all give different advice on this and that, 1 forward or two etc but it best to pick a team around the best players you have available right now.
Some main things to remember is to keep your team healthy, train them and upgrade it if and when you can!, use substertutes during live games as this will get you bonus booster packs and come back regular( every day) to get your bonus tokens(35T ) season contract.
Youth is best as there stamina during matches will last longer but while your finding your feet what you have will do. The main thing is when you choose a formation stick to it and build your team around it!, the more you try to change formations the more you will struggle in this game as just because you lost a match this time with one formation it does not mean you will lose the next match!, what you must understand is there are many factors that contribute to the outcomes of your games and so it is a case of learning if I do this, this happens, if I do that, that happens and so on, so good luck playing T11 we will help you as much as we can.