meta tags and title doesn't show in google search

hey guys my meta tags like description and title doesnt show up on the search results when i search for my website on google, it shows an old title that i had placed but when i click the link, it enters the site and the title changes to the one ive set in the code, here´s my code , is there anything missing.

<head><title>Angência de Marketing Digital em Angola: Imbound e SEO </title>
<meta content="width=device-width, initial-scale=1.0" name=viewport>
<meta name=description content="somos agência de marketing digital em Angola">

<meta name=keywords content="Marketing Digital,Marketing Digital em Angola,Marketing Digital google"> </head>

Solution

I am assuming that there is not more than ONE title tag in your code. There are several reasons this could be happening:

Your source code is wrong - make sure your code contains exactly one title meta tag
Google cache is outdated - If you type in Google 'cache:' followed by the url of your site or page youll see what google has cached for your site. It the appeared date is before you made the changes you will have to wait for goolge to crawl your site again.
Google doesnt like your titles -https://yoast.com/google-page-title/
You have done nothing wrong and it could be your hosting service that is delaying the proper file to be uploaded and updated live.