One thing I am infallibly certain is that your knowledge of Catholic doctrine is incomplete and highly flawed.
Popes, as members of the Episcopacy of the Church, participate in the infallible declarations of the Magisterium, but there have only been two ex cathedra statements by Popes.
If you are serious about educating yourself on Catholic doctrines I would advise you to stay away from the internet and seek out a priest or enroll in theology classes at a Catholic college or university. I can't think of any priest who would reject a sincere inquiry or deny admittance into an educational program even on the conditions that the exercise is not for the purposes of conversion.
Your tendency is to reject substantiation and substitute your opinion instead. If it is I who has showed more ignorance of Catholic doctrine than you, who is sure of what prominent RC apologists and scholars such as i have quoted in my posts are not, then it must be shared by them. When you find the infallible list of all infallible statements then tell them. They will appreciate it.