I’m having an issue with a bash script. Specifically, I’m trying to extract data from a webpage using grep and sed, but it never returns anything. I’ve also tried with awk, but no luck. Does anyone have any ideas?

#!/bin/bash
# Define variables for URL and browser
sGCitta="fucecchio"
sGTypo="vendita-case"
sGDomain="immobiliare"
url="https://www.$sGDomain.it/$sGTypo/$sGCitta"
# Get the HTML content of the page
html_content=$(curl -s -L "$url")
# Find all listings on the page using grep
annunci=$(echo "$html_content" | grep -o '<div class="listing-item">.*</div>')
# Print the listings found after the grep operation for debugging
echo "Listings found:"
echo "$annunci"
# Connection to the SQLite database
db_file="immo.db"
# Loop through the listings
while read -r annunci; do
    # Extract information from the listing using sed
    prezzo=$(echo "$annunci" | sed -n 's/.*<span class="in-formattedPrice__text">([^<]*)</span>.*/1/p')
    link=$(echo "$annunci" | sed -n 's/.*<a class="in-listingCardTitle" href="([^"]*)"[^>]*>.*/1/p')
    descrizione=$(echo "$annunci" | sed -n 's/.*<a class="in-listingCardTitle" title="([^"]*)"[^>]*>.*/1/p')
    metratura=$(echo "$annunci" | sed -n 's/.*<span>([^<]*)</span>.*/1/p')
    # Check if the description contains the word "asta"
    if [[ "$descrizione" =~ "asta" ]]; then
        astaOnOff=1
    else
        astaOnOff=0
    fi
    # Insert data into the SQLite database
    sqlite3 "$db_file" "INSERT INTO $sGDomain (prezzo, link, descrizione, metratura, asta) VALUES ('$prezzo', '$link', '$descrizione', '$metratura', '$astaOnOff')"
done <<< "$annunci"

I tried with awk but I couldn’t succeed. I think it’s a problem with the regular expression. I expect it to return the price, square meters, link, and description.