Only Orthodox people will be saved

Not asking in bad faith, I'm genuinely curious. I'm not Orthodox btw.

It's Orthodox dogma that salvation is only found within the Orthodox Church.

There are around 2.5 billion Christians who put their faith in Christ as their Savior. Nearly 2.2 billion of them are Catholic or Protestant.

So if I'm correct, according to Orthodox dogma, 2.2 billion out of 2.5 billion Christians are de facto not saved, simply because they are in the wrong church, even if they have genuine faith in Christ.

How does that align with the entirety of Christ's teachings and the structure of the early church?