I don’t think Catholics (not one obviously) worship Mary.
At the same time, the dogma around her and the saints is not supported by Scripture.
But I’ll be the first to say the Catholics (and Mormons etc.) do lots of good works (at least since about 1800) even if their theology is messed up.
Catholic theology is centered on God. Not messed up at all. Maybe you meant to use another word.
I recommend you look up Dr. Scott Hahn, or go to Catholic.com, and you will find all of the Scriptural references.
While you may not agree with them, they are there.
Lots of good books on Mary. I recommend Hail, Holy, Queen by Scott Hahn.