To be more precise, this "command" was given to Joshua, since Moses did not enter the Promised Land. If I'm not mistaken, it's in the Book of Joshua; feel free to read it if you're interested. On the contrary, the Jews were captivated by the local women, so they did not fulfill the "commandment" but instead began to mix with the Ammonites.
I'm not blaming God for human sins. It just seems that way to you because I allow myself to question the "Holy Scripture." I'm simply saying that the "Scripture" is sacred only when you agree with its consistent development of the relationship between man and God. I presented two paths: pagan and Jewish (Christian, Muslim). For me, the pagan path is more logical and simpler because I believe that God created the world from himself, and the world is part of God, not his creation. Besides, paganism is organically suited to man; it involves understanding God through nature, people, and phenomena, and thus striving for divine perfection. There is no antagonism towards God in paganism because God is all-powerful and perfect, and only man can comprehend this perfection.
In the Jewish path, it's the opposite. God has an antagonist – the devil, a former angel whom God cast into the abyss. But what's more, God decided to make this "fallen" being his tool for "forging" a slave out of man, that is, a creature obedient to his will. It turns out that as soon as God created man, he immediately began to subject him to trials(!). This seems illogical for a loving being. "Love believes all things, hopes all things...it does not seek its own...love never fails." Did this God inspire the apostle Paul to write these amazing words, who, having just created man, immediately subjects him to tests of loyalty and sends a serpent to tempt him (if this serpent is the devil, then it certainly could not have crawled out of the abyss without God's will; if it's an ordinary "talking" snake, then it could not have spoken without God's will)? Something doesn't add up. I'm not "blaming" the scripture; it's blaming itself by describing God as cruel, unfair, and suspicious. If God is like that, then what should man be like?
I read about "the blood of infants" in the History of the Church, published by the Moscow Patriarchate:)
Regarding free will. Man has one will, which is also free. And this will can make mistakes, desire good, curse, believe, doubt, love, hate, strive for perfection, "go with the flow" – whatever happens, happens.