I poked around and found this blog article. It’s pretty eye-roll

to me, but decent info that might work for you. (The writer is in the Arizona desert.)
Suggestions: plant in a pot, not in the ground; plant under high shade in the afternoon if you have it, on the east or northeast side of your house if not, periodically acidify again as your water is probably alkaline; plant at least 2 varieties (cross-pollination.)
I’d skip the azomite soil amendment - it’s pricey and probably unnecessary.
https://www.weedemandreap.com/growing-blueberries-desert/
And maybe contact the Extension Master Gardener folks in the southern Arizona area. I’ll bet they’ll be tickled to hear from Greece!
https://extension.arizona.edu/programs/maricopa-county-master-gardeners