Q: Can I publish a book if someone already used the title?
A: You cannot copyright a title, therefore all titles can be used by anyone for any reason, see https://www.copyright.gov/help/faq/faq-protect.html
That being said, I consider it to be in bad taste to re-use a title that has been previously published in your own country in the past 10 years. It happens in fiction so much that it doesn’t even raise an eyebrow
One of my authors wrote a book called “Coven” and there are literally dozens of them out there, no one has ever complained