Gtm - Facebook Pixel y Api

I'm looking to hire someone to help me with Google Tag Manager. Specifically, I need help to implement Facebook Pixel + Meta API, I had done it before, but from one moment to another nothing works anymore, create custom templates with Google Tag Manager, to fire the events of (PageView, AddToCart, InitiateCheckout, Purchase , Lead, CompleteRegistration, Contact) and that each one can be deduplicated with the API events, the idea is that the matching quality of the events is good in all.

I have some knowledge to create the triggers, but the tags are getting difficult for me now, what I did before doesn't work anymore.

Thanks to Google Tag Manager, managing and tracking multiple tags for analytics, marketing and remarketing can be much easier to analyze the data. So I'm hoping to find someone who is a GTM expert up to date with this year's updates who can help me take advantage of this great platform.

Please contact me if you have extensive experience and knowledge of Google Tag Manager and connect them with Facebook pixel and api and all its features.