I am very new here (only my 4º season) but i have a very good team for my level.I usually win,and sometimes when i play with "lower" teams than mine i feel some dificulty cause their tactics are well balanced or they are good to counter my own tactic so even with an higher possession i could have an bad result (draw or even loss).In real life there are many examples of big teams loosing to small ones...and the main reason is that "s..t happens".Maybe sometimes we are to confident of an win,so we dont care to see the other teams past results,tactics or squad and even in the live match and loosing we still remain too confident of a win cause it´s still time to get a loosing 0-1 to an 2-1...and we dont do nothing to change it.I´ve lost 2-1 away at champions league with a less rated team,just because his tactics consisted in a 4-2-3-1 and even seeing that i used may 4-2-2-2 confident that my better players would uprise and make the diference...as i said,i´ve lost 2-1.And i was loosing by 2,until i made a change that made me dream about the qualification:i risked buy changing one dc to an dmc (3-1-2-2-2),preventing his amc of going solo all the time and i scored one at second half.At the second leg,i used that same formation since the first minute and i won by 1-0.
I dont know if this helps anyone about not giving up this game,but i just tried to show you that some things we can control and at least we can have funn knowing that both our mistakes and our good reactions can really afect the team.