The Ai coach has a tendency to overuse the goaline offense, which consists of 7 plays total, all runs except for one pass play, the PA Drag. This is not a good offense to use on first and 10, especially against a good team. In most cases, it will "auto" the goaline defense, which is very tough to run against. There are 3 ways to curtail or eliminate it being called other than when you want to use it, like 3rd and 0-1, 4th and inches, or on the goaline.
Best way is to use it by rule only and zero out the 2rb3te personnel in your offense setting for gameplan. If you do not know how to do this, please PM me and I will go into more detail.
Another way is to not have any Goaline plays active, but thats not as good or more realistic than the method above.
Lastly, you can still leave it up to the Ai coach and have the personnel setting on 1 or 2, so it can still be selected but not as much. Your settings for personnel are pretty crucial for the offensive diversity to get an even useage of your selected plays.
Any problems or questions about how to improve your diverse use of plays, please pm me. There are also very experienced players who are posting their play results by game in the GG thread. They will also be able to advise you on how to get the good diversity level.