I lived in Japan for 33 years (minus furloughs), and over and over saw idolatry in the raw: people bowing and praying to images of Buddha made with human hands.
Catholics also bow and pray to images made by hand of Mary and others. How in the world someone could think of such an idolatrous religion as being like our Biblical faith is beyond me. Catholics who pray to images break the first two of the 10 Commandments, which is an evil, evil act.
Not too long ago I found myself listening to a Catholic radio program. The priest said, "Let's pray," and I thought, "That's nice." And then he prayed to Joseph. How is that not wicked idolatry?
What is even worse IMO is that the RCC teaches transubstantiation (Communion) - when the priest says certain Latin words (English now) the bread and wine turn into the actual body and blood of Jesus Christ and is called the Eucharist
and it can be worshiped and adored as God.
Although I received the "Eucharist" a few times I never believed the doctrine of transubstantiation.
This dogma was one of my turning points with the RCC along with the worship of Mary, the saints and angels.
The RCC calls it "veneration" not true worship when it comes to created beings.
However when I was a young child and taught by nuns in Catholic School no distinction was made between prayers to Jesus and prayers to Mary, the saints or angels.
I was taught to pray in the same manner kneeling before the crucifix or the statue of Jesus, Mary, saints, angels.or Eucharist.
Yes in my memory even after salvation and remaining in the RCC in my ignorance, I approached committing sins of idolatry but had perfect peace after my departure from the RCC acknowledging my sins to God alone.
I did benefit from my stay in the Church of Rome in that I was forced into the scriptures and then to obey the word of God
1 Corinthians 6
17 Wherefore come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you,
18 And will be a Father unto you, and ye shall be my sons and daughters, saith the Lord Almighty.