All the questions are very easy to answer. The main part of Catholic Answers has many answers. You can also read Jimmy Akin.
Anyone who studies Catholicism in depth and compares it to Protestanism will come away with very different perceptions than what is being taught in Bible churches. Many convert when they intellectually study the questions in depth, but even if they don’t convert, if they are honest they no longer ask the silly questions or have silly accusations. These churches are anti-intellectual, and they don’t hold a candle to Catholicism in serious study and debate.
Actually, I am somewhat surprised that anyone would be proud of posting such offensive videos on YouTube. Those videos show brainwashed, prejudiced zealots interfering with a sacred worship service. They should be embarrassed.