Whatever you do, don’t read “Where Troy Once Stood” by Iman Wilkens and “The Baltic Origins of Homer’s Epic Tales” by Felice Vinci, both available on Amazon.
There is or was a set of pages by Edo Nyland which explored something similar, attributing the Odyssey to preRoman British sources, with the islands of Scotland the setting. But whatever you do, don't read "The Authoress of the Odyssey" by Samuel Butler. :')