Now, to address these parts of your post:
The Mass contains different “Bible Stories” each day because there is a different scripture reading each day from the Bible. The readings cycle takes 3 years to complete and covers a large part of the Bible. So I don’t know what you mean by “Rest of the Bible Stories”. If you want to do Catholic Bible Study and look at all of the Bible, many parishes offer Bible study groups, or if there isn’t a Catholic Bible Study group in your area then you can study the Bible on your own, using many different books or online resources. The entire Bible relates to the Catholic church, so it’s not like the Church is ignoring the Bible.
As for teaching children to adults, many parishes do have a children’s study group for the small children - a couple of parishes I attend send the small children out for a “Sunday school” during the homily of the Sunday Mass. It’s true that not all parishes can offer this because some don’t have enough children to make it worthwhile or they don’t have anyone to teach the program, but it is done at some places, so for you to say “No teaching of little children” Is incorrect.
For the older children, they either attend Catholic school or attend a Catholic teaching program to prepare them for the sacraments. If you don’t see this happening right at your church, it may be happening through another parish or at some time when you’re not aware of it.
For adults, there is an RCIA program for those who are new to the church. Once a person has joined the church, he can come to Mass and learn from the Scripture readings, homily etc there and he can also pursue other catechesis programs of his choice, like Bible study or even reading CAF forum. Mass is primarily to worship God, not for people to be taught about their faith, so if all you’re doing is coming to Mass, you aren’t going to see any teaching that’s going on other than whatever is in the homily, because most of it is happening some place other than Mass.