Google Maps Can not be load!

Hello,
I would like to add google maps same as on this page (http://themes.semicolonweb.com/html/canvas/contact.html) I mean only city will be pointed like Melbourne, Austraila.
I will point to Istanbul, Türkiye.

I have created API key from google for domain to seferimguvende.com.

in contact page code is:

<!-- Google Map
						============================================= -->
						<div class="col-lg-6 min-vh-50">
							<div class="gmap h-100" data-address="Istanbul, Turkey" data-markers='[{address: "Istanbul, Turkey", html: "<div class=\"p-2\" style=\"width: 300px;\"><h4 class=\"mb-2\">Hi! We are <span>Envato!</span></h4><p class=\"mb-0\" style=\"font-size:1rem;\">Our mission is to help people to <strong>earn</strong> and to <strong>learn</strong> online. We operate <strong>marketplaces</strong> where hundreds of thousands of people buy and sell digital goods every day.</p></div>", icon:{ image: "images/icons/map-icon-red.png", iconsize: [32, 39], iconanchor: [32,39] } }]'></div>
						</div><!-- Google Map End -->

But google does not load maps: http://seferimguvende.com/iletisim.html

can you please tell me how can I solve this.

thanks in advance

Hello again;
I have done it, but now loaded gry thing! Can you please check it: http://seferimguvende.com/iletisim.html