I think you need to find better websites to frequent!
And you’re right, these questions have been asked many, many times before. The websites you have listed have been refuted time and time again. If you search this site for those websites, you’ll probably find some more detailed info.
Jack Chick is about as far to the anti-Catholic extreme as you can get. His tracts have long been discredited. I recommend Karl Keating’s book Catholicism and Fundamentalism for a thorough refutation of Chick’s more popular anti-Catholic ideas.
In a nutshell, Chick gets much of his “inside” information on the Church from a man named Alberto Rivera who claimed to have been a Jesuit priest working in the Vatican (a claim that is ridiculously easy to prove as false). I really do not like to “diagnose” people I haven’t met, but I simply can’t think of any other way to describe Rivera other than “unbalanced”.
The best thing you can do with these websites is simply avoid them. These people earn their livlihood by attacking the Catholic Church. No matter how well-reasoned a response, and no matter how concrete the evidence you present to them, you will not change their mind.
If you have come across anything that has raised specific questions in your mind, feel free to ask those questions here. There are many great people here who will give you great info.
Other than that, I strongly recommend that you spend your time reading more worthwhile things. I have links to many, many great Catholic websites in my blog (see the link in my signature below). That’s a good place to start.