We don’t. Why do protestants lie about Catholic religious practices?
You’ll have to ask them.
If you believe you don’t pray to saints you need to tell these people as well as others I have found.
“PRAYERS TO SAINTS: FOR HEAVENLY HELP FROM GOD'S MOST GRACIOUS ADVOCATES” [http://www.ourcatholicprayers.com/prayers-to-saints.html]
“A Treasure of Prayers Related To The Saints” [http://www.catholicdoors.com/prayers/saints.htm]
Here’s a prayer to Michael the Archangel asking him FOR something....
“Saint Michael the Archangel,
defend us in battle.
Be our protection against the wickedness and snares of the devil.
May God rebuke him, we humbly pray;
and do Thou, O Prince of the Heavenly Host,
by the Divine Power of God,
cast into hell Satan and all the evil spirits
who roam throughout the world seeking the ruin of souls.”
And here’s a prayer TO Mary asking her FOR something, that she do something for the petitioner.
The Memorare
“Remember, O most gracious Virgin Mary, that never was it known that any one who fled to thy protection, implored thy help or sought thy intercession, was left unaided. Inspired by this confidence, I fly unto thee, O Virgin of virgins my Mother; to thee do I come, before thee I stand, sinful and sorrowful; O Mother of the Word Incarnate, despise not my petitions, but in thy mercy hear and answer me, Amen. “
Both these prayers are examples of prayers praying TO the person FOR something. They are not prayers asking them merely to pray for us.
Catholics can deny all they want that other Catholics pray TO the dead FOR things, but a cursory look at their prayers demonstrates otherwise.