Hi!
You know, the Catholic faith isn't much different in their teachings as any other mainstream religion in Christendom. I personally am not Catholic, but I have found the teachings in many of the Catholic churches and other religions to not coincide with Bible teachings. For instance, a common teaching is that when someone does bad things they will go to hell, and if they do good things they will go to heaven. However, these teachings actually are not backed up with scripture. The Bible answers the question, "Do the dead experience pain?" in these verses:
Ecclesiastes 9: 5, 10: For the living know that they will die, but the dead know nothing at all, nor do they have any more reward, because all memory of them is forgotten. 10 - Whatever your hand finds to do, do with all your might, for there is no work nor planning nor knowledge nor wisdom in the Grave, where are going.
Psalm 146:4 - "His spirit goes out, he returns to the ground; On that very day his thoughts do perish."
Romans 6:23 - "For the wages sin pays is death, but the gift God gives is everlasting life by Christ Jesus our Lord."
So the first two verses are describing the condition of the dead. When we die, we simply fall asleep in death. If God punished those who were sinful after death, it wouldn't make sense for the scripture to say "the dead know nothing at all" or that their "thoughts perish." Also, Romans tells us that the wages we pay for sin is simply dying. A loving God will not torment people in a burning hellfire as so many people including the Catholic faith teach.
Then you might think, well if people don't go to heaven or hell, what happens to them? Well here's some encouraging scriptures to conclude with. Keep in mind the end of that verse in Romans above where it says "everlasting life."
Psalm 37:29 - "The righteous will possess the earth, and they will live forever on it."
John 5:28,29 - "Do not be amazed at this, for the hour is coming in which all those in the memorial tombs will hear his voice and come out."
Acts 24:15-"There is going to be a resurrection of both the righteous and the unrighteous."
So really what many religions don't teach is that God promises us that he will resurrect those who are dead here on the earth with an opportunity to live forever. But not forever in the conditions we see today. Rather, these conditions:
Isaiah 35: 5,6- "At that time the eyes of the blind will be opened, and the ears of the deaf will be unstopped. At that time the lame will leap like the deer, and the tongue of the speechless will shout for joy. For waters will burst forth in the wilderness, and streams in the desert plain."
Revelation 21:4- "He will wipe out every tear from their eyes, and death will be no more, neither will mourning nor outcry nor pain be anymore. The former things have passed away."
God promises he will take away these terrible conditions we see today and restore the earth to perfect conditions as he originally intended. So this is why I personally have a problem with Catholic teachings. They do not teach people about God's Kingdom, instead, the falsehood of hellfire and other unscriptural teachings. I hope you found this encouraging and informative!