I don’t know what you’re reading or where you’re getting your information, but ISTM if you dug a little deeper, you’d find those accusations are usually false, or at the least, highly exaggerated.
Mary’s titles usually reflect something more about Jesus than strictly about His mother. For instance, the mother of the king is the queen (aka the “queen mother”). Mary is the Queen of Heaven because she is the mother of the
King of Heaven, Jesus. It has nothing to do with pagan goddesses. In Jeremiah 7:18, Mary did not yet have that title (since she wasn’t even born yet), so that verse obviously does not refer to her, but to a goddess that the people were (falsely) calling the “queen of heaven” (and “heaven” in this instance probably referred to “the sky,” not really Heaven, where God is).
Prayer beads have been around for a long, long time (true) and the beads on string (or knots on string) are an easy way to keep track of prayers said (also true). However, praying the Rosary does not even
require the use of “prayer beads,” nor was the Rosary taken from Buddhist worship (and in fact, prayer beads were/are used in many religions and cultures, not just Buddhism). The Rosary is about meditating on the life of Christ (the Mysteries) and making use of frequent, sincere prayer (if you’re just mindlessly repeating the prayers, you aren’t praying the Rosary–slow down and focus). I suppose if you’re really that worried about using prayer beads, you can always use your fingers instead, if you prefer. But I sincerely doubt anyone who saw you using rosary beads would think you were actually praying to Buddha.
The sign of the cross signifies that we worship God with our minds (forehead), our hearts (chest), and our strength or soul (shoulders). It also reminds us that Christ loves us so much that He died for us. Of course He died
on the cross… and yes, the Romans were polytheistic (worshiped many gods/goddesses). But the pole with a crossbar was not “invented” or claimed solely by the Romans. It’s also been around for a very long time. And again, I sincerely doubt anyone who saw you make the Sign of the Cross would think you were
pagan.
We human beings have often venerated (honored) those who exemplified virtues we admire. That’s nothing new and is not pagan in origin. The saints are honored because they are good role models, because they practiced those virtues we admire and want to emulate. Like any other hero, we don’t worship them. But to imply that the Church sort of “invented” the idea of saints just to convert pagans is false. We read of saints in the Bible (Rev 5:8, Matt 17:3, Ps 103:20-21, and others), and we are called to become saints. Just like any other person we admire, we honor those who lived very holy lives, and we might share their stories to inspire others. Often they were given “patronage” over a certain area simply because they went through similar struggles. And those who have been through similar situations are easier for us to relate to when
we’re struggling.
Again, we shouldn’t just assume that because “the pagans did it,” that it’s a strictly pagan practice or that it
came from the pagans. Otherwise, how far should we take it? Should we stop praying at all, just because “the pagans did it”? Should we stop using the roman alphabet and the “plus” sign (+)? Because you know, the Romans and Greeks were pagan. I mean, in reading some of these accusations online (not referring to OP’s but other ones), it gets a little bit ridiculous sometimes.
I’m also not sure why some people have such a big problem with re-using a simple idea or method in a new way to teach about God. It’s one thing to be careful about demons and falling prey to occult practices, etc., but I think we often give superstition and false idols much more power and credit than they deserve.
Even if a practice actually used to be pagan, you still can’t “accidentally” mortally sin, especially not by properly using a practice that has been blessed by the Church. But do be careful that you don’t lean too far the other way and give false idols (or false accusations) more influence over you than they should have.
Lastly, keep in mind that praying the Rosary, praying to saints, and even calling the Blessed Virgin by the title, “Queen of Heaven,” are all not
necessary. They are good and holy practices…