GDPR Google Analytics and YT Videos.

Hi as i ask in the Comments Section on Themeforrest here are my Questions again.

1. i want to use the youtube-nocookie URL for using youtube videos in the video element, but after add the link and save setting, include a preview image, only the preview image is shown. By click on the play button only the link to youtube is shown over the preview image and you must click on the link to again to open the video in a new tab.

Is it possible to release it in this way, that you add a youtube no cookie link to a preview image and if you click on the image the video starts in a lightbox?

2. i read here some posts about GA and deactivate it. some as i read is that there a a problem to add the opt out in this way
<a href="javascript:gaOptout()">Disable Google Analytics</a> and it will formated new (as text), aber change something again on the page.

2a. does this shortcode with the GA switch works propperly?

so my question is have you (enfold team) a best practice, maybe a tutorial how to add GA GDPR compline to a webproject? include using it anoyminous? i have read something like to add this to the google service section, but i’m not save if this is anoyminous:

<script type="text/javascript">
var gaProperty = 'UA-xxxxx-xx';
var disableStr = 'ga-disable-' + gaProperty;
if (document.cookie.indexOf(disableStr + '=true') > -1) {
window[disableStr] = true;
}
function gaOptout() {
document.cookie = disableStr + '=true; expires=Thu, 31 Dec 2099 23:59:59 UTC; path=/';
window[disableStr] = true;
alert('Das Tracking durch Google Analytics wurde in Ihrem Browser für diese Website deaktiviert.');
}
</script> 

because i read that this must look like something like taht:

<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');

ga('create', 'UA-XXXXXXX-X', 'website.de');
ga('set', 'anonymizeIp', true);
ga('send', 'pageview');
</script>

or that:

<script type="text/javascript">

  var _gaq = _gaq || [];
  _gaq.push(['_setAccount', 'UA-XXXXXXX-YY']);
  _gaq.push(['_gat._anonymizeIp']);
  _gaq.push(['_trackPageview']);

  (function() {
    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
  })();

</script>

thx for a tipp, link or somethings else tom