It's all about how you think about these things properly.
Today's modern standards can't be applied to the standards in antiquity entirely. For example, the reason God wanted Israel to annihilate several nations in Canaan is because they engaged in child sacrifices. Israel came into that land as judgment upon those evil nations. Today, if a tribe of people engaged in human sacrifices, we wouldn't kill them all, but cease control of them to stop them. But in antiquity, what would happen is the next generation would grow up and continue such heinous acts and war to protect their beliefs. To validate God's response through Israel as righteous, know that of all those nations in Canaan, only Israel remains.
The uncreated Creator is proven because nothing in nature happens all by itself, so the universe can't cause itself. There is only one option. The uncreated Creator exists. He intelligently designed. Knowing this, discover where He has revealed Himself.
You don't need to worry yourself initially with whether the Bible is inerrant. Focus just on the fact most skeptical scholars agree Paul was being genuine in Gal. 1 & 2, 1 Cor. 15 in which he said he saw Jesus resurrected and met with the Apostles who gave the same testimony in various group settings. If there is no way to explain it away, then it is probably true. There are no incidents of group hallucinations in human history and delusion doesn't fit the explanation because delusions are non-visual. Hence, we are led to Christ if we are genuine about the evidence leading us no matter how difficult it may be to accept.
Ask yourself what you value most in life? This is what you effectively worship, thus it is your religion, and it is what you place above God. Nothing should ever be placed above Him. An atheist would have the worship of puff the magic dragon, the universe happened all by itself, shutting his mind down to the transcendent causal agent so that there are not supernatural causes at work or eternal consequences. This feeds his self life and sin nature and "good self". The good self is salvation by works. You could do something really good, but if God never led you to do it, it is all in vain. It is a way to prop yourself by your own strength instead of relying on God's strength and His leading by the Holy Spirit for your life specifically.
Because people are fallible, there is a cause for this. It is because we are not God. Furthermore, the fist God-conscious man (Adam and Eve) rebelled, thus sin begets sin and moves through the generations until it is finally done away with through God's redemptive design.
So far the points you listed for your atheism or concerns about the Bible are unwarranted. If you acknowledge this, that's a first good step.
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