1. Catholics throughout centuries have not been without error; it goes without saying that an apology is due for innumerable wrongs. And it was offered: Pope John Paul II Makes Unprecedented Apology For Sins of Catholic Church
2. The Church never considered being non-Catholic a capital offence. The Crusades were wars of liberation of the Holy Land. The Holy Inquisition is a Church court that punishes Catholics for preaching falsehoods. The most severe punishment that the Inquisition can or could impose was ex-communication. It has no jurisdiction over non-Catholics. Many governments considered heresy to be an act of treason and punished heretics by death. They -- not the Church -- are responsible for those who suffered death during the Inquisition. Nevertheless, the Church was responsible indirectly, through her judgment of heresy and for that we do apologize.
3. No matter how you count the "victims" of the Inquisition did not count in the "millions". Would you care to provide some source for this allegation?
4. Later (in 7) you seem to imply that the Church imposes a confession on non-Catholics. The fact is that confession is (a) voluntary and never imposed; (b) available either to Catholics or those who have resolved to become Catholic and confess as a part of their conversion, but not available to non-Catholics otherwise; and (c) is private so is not in the nature of a public apology.
It is fine to make posts hostile to Catholicism on an open thread such as this one, but if you also wish a meaningful response, it is a good idea to make a meaningful post. This forum has many knowledgeable posters and I encourage you to learn about Catholicism from them, as anyone interested in authentic Christianity must.