Letting my system out

Like wtf I swear every match what’s the point of having a high and low ovr gk and they still get scored on like WTH EA please improve the gk mechanics and have them do more saves like u cant just let someone score on when your defense screws up and what’s point have a 1v1 situation when u still scored on. ALSO  PLEASE IMPROVE THE MECHANICS LIKE I HAVE A PLAYER WHOS FASTER THAN THERE DEFENSE AND STILL CATCH UP TO ME AND HOW AM I  SUPPOSED DEFEND WHEN THE OTHER PLAYER WHO PLAYS FC MOBILE 24/7 AND DO INSANE DRIBBLES AND MY DEFENSE WHY DO HAVE ONE UP IN THE MIDDLE AND HAVE 2 IN THE BACK LIKE I DIDNT PUT THE 3RD DEFENSE ON OFFENSE NO I WANT HIM TO BE IN THE BACK WITH THE REST OF THE DEFENSE AND WHY CANT I SWITCH PLAYER LAST SECOND WHEN THE OTHER TEAM ALMOST SCORES AND TRY TO SWITCH TO A DEFENDER AND I GOT SWITCH TO A MIDFIELDER LIKE WTF.