I will setup tag manager, analytics, conversion tracking

I'll be needing the login details of your website and the Admin access to your Google Tag Manager and Google Analytics, and Ad accounts

Yes, I make the setups for Facebook Base Pixel implementation on the website through the Tag Manager, along with Facebook Pixel Pageview Tracking. Moreover, I also make the Event tracking setups.

Lack of goal set up! Many people simply install the default Google Analytics tracking and call it a day. You need to configure goals and probably custom dimensions/audiences to get real value from your analytics.

Content grouping allows you to see at a glance how a set of pages are performing. For instance, if you wanted to see how all your blog posts combined were performing or segment based on these you could use a content group to dive into the data.

Do you look in your acquisition reports and see that the main source of your e-commerce transactions is from paypal.com or another 3rd party processor domain? You're missing out on valuable insight as to the true referral source (potential gold mine).

Do you have a search box? This is an extremely valuable source of information that your customers/users are providing to you. If they're trying to find something on your site by using the search then perhaps your UX needs some work. They may also be looking for a product you don't carry, but should