Need Developer for Google Ad Manger Single Request Architecture

Hello

I want to setup GAM SRA for my site.

I have share the details of a website that uses this type of setup please check it out and Bid on it only if you understand and know this or different setup which is better than this

https://jjplayer.in/adsstar/ad.js

Ad Tags in Website

<div id="widescreen1"></div>
<div id="tablet1"></div>
<div id="mobile1"></div>
<div style="display:flex;justify-content:center;">
<div id="box1" style="padding-right:10px;"></div>
<div id="box2" class="box-hidden2"></div>
<div id="box3" class="box-hidden"></div>
div id="box7" style="padding-right:10px;"></div>
<div id="box8" class="box-hidden2"></div>
<div id="box9" class="box-hidden"></div>
</div>
<div id="widescreen3"></div>
<div id="tablet3"></div>
<div id="mobile3"></div><div class="a32af2e444e0ea50ce056e53d0777521" data-index="1" style="float: none; margin:10px 0 10px 0; text-align:center;">
<div id="widescreen1"></div>

Only Bid on it if You understand This type of setup in GAM