Protestants do confess regularly, both communally at each Sunday service, and individually in their own daily prayer life; they confess to Jesus as their one mediator and priest rather than to a human priest. It isn’t what the Catholic Church believes or teaches, but it is what Protestants believe and teach.
The CCC (838) says, in part (the whole portion talks about who is Catholic and the position of other religions and is worth a detailed read), “The Church knows that she is joined in many ways to the baptized who are honored by the name of Christian, but do not profess the Catholic faith in its entirety or have not preserved unity of communion under the successor of Peter.” and (846-847) “…all salvation comes from Christ the Head through the Church which is his Body… He himself explicitly asserted the necessity of faith and Baptism…Hence they could not be saved who, knowing that the Catholic church was founded as necessary by God through Christ, would refuse either to enter it or to remain in it. This affirmation is not aimed at those who, through no fault of their own, do not know Christ and his Church:…”
There is also another section nearby that says something about the Catholic Church not condemning people to Hell…God does the judging, but I can’t find the particulars right now.
I would consider practicing baptized Protestants to be people who have made a sincere effort, with the best knowledge that they have, to seek God with a sincere heart and to do his will. I also know that they do confess their sins. I am not the one who is going to be judging them when the time comes, but if I were God, I would not condemn them to Hell. Clearly, however, I’m not God.