This is a common misconception that many detractors use to impose their own agenda.
The actual truth is, no one worships any of those.
Mary, the saints, archangels, etc., are "go-betweens" or "interceders" in the "spiritual realm", nothing more, and similar to the way priests, preachers, theologians, and religious teachers are in the "physical realm".
But the detractors love using this tactic as examples of idolatry, or of pseudo Christian practices that are false, but the truth is they are distorting and twisting the truth of the matter in order to confuse you and put their own agenda in it's place.
They also love to say we worship statues, comparing them to false idols, but this is another ignorant distortion of the truth.
Statues are no more than artistic representations (sculptures) similar to paintings of an artists view, they happen to be of religious themes.
You see common depictions of people kneeling down and praying in front of a statue, and so the distorters say, "see there, they are praying to a statue, a false god", when the real truth is they are praying to God "in front of a sculpture that easily reminds them of their inner conception of God" or one of God's interceders.
I seriously doubt any intelligent person would say that the painting of The Last Supper was idolistic.
To make of it more than that is to invite ridiculous distortions of the truth, yet they use this distortion quite often.