Please do not try to be smarter than a succession of Popes and a magisteriumn that has explained this topic extensively for centuries. We are not fundamentalist protestants who think everyone else is going to hell. Read up on the subject there are extensive vatican documents about it all of them online. Gaudium et Spes, Nostra Etate, Lumen Gentium Quanto Conficiamur Moerore, etc.

"There are those who without any fault do not know anything about Christ or his Church, yet who search for God with a sincere heart and, under the influence of grace, try to put into effect the will of God as known to them through the dictate of conscience: these too can obtain eternal salvation. Nor does divine Providence deny the helps that are necessary for salvation to those who, through no fault of their own, have not yet attained the express recognition of God yet who strive, not without divine grace, to lead an upright life"