I will install event trackers with google analytics and tag manager

UPDATE: Google Analytics will no longer collect data on July 1st, 2023. You will still have enough time to migrate Google Analytics to Google Analytics 4. I have migrated many GA accounts to GA4 and used Google's best practices to set businesses up for the future by setting up the Universal Tag, data collection/streams, and creating conversions for Google Ads sourced by GA4.

Install Google analytics, tag manager, Facebook pixel and ecommerce tracking. Set up custom conversion trackers through tag manager to correlate with google analytics, Google Ads, Display/Remarketing, and Facebook Ads. 

By enabling Tag manager to track conversions through all marketing channels, you'll be able to gauge which campaigns are working better than the other and which campaigns you should fund more.

When running an ecommerce website, you'll be able to track dollars from all of your advertising channels to determine how each channel interacts with your website. That's the power of GTM, a way to analyze all marketing channels into one platform.