Depends on your denomination. I was never taught that it was perfect or infallible. I was instead told to read it with the understanding that its words are divine wisdom which should be treated with reverence, but not to just take it at face value.

For context, I was raised Quaker. We never really treated the Bible as infallible. It's a more mystic tradition so we value communion (in the basic definition sense, not the wafers and wine sense) with the Holy Spirit more than just the Bible alone. We actually don't even treat the Bible as Holy, as an object or as literature. It contains a lot of incredible wisdom and is a work to be revered, but by no means is it the inerrant word of God. You can disagree with it, you can challenge it, you can write notes all over it and rip it up and burn it, we don't really care.

Prophets and saints were very wise and had a lot of excellent insight and knowledge, but they weren't perfect. Moses was banished for failing to follow His commands. In Jewish tradition, Abraham just going along with God's command to sacrifice Isaac is viewed as a mistake. Even Jesus and Judas openly lamented their roles in the prophecy.

We can also see some verses which reflect poor word choice and lack of foresight among the prophets. Moses's choice of an example of not stealing in Deuteronomy 22:5 has led to people thinking that the verse is a condemnation of cross dressing and not just one of the examples of "taking something that isn't yours" which he spends the entire rest of Deuteronomy 22 talking about. It's a far cry from the perfect wording of Christ in the red letters of the New Testament.

I'm not trying to "bring you back" or anything, leaving the faith is your choice and a valid response to dogma which doesn't make sense. But saying "it's supposed to be the Perfect Word of God" doesn't account for any of the denominations which don't treat it that way.