Debug and fix GTM & all mess inside with tracking codes, fb pixel, remarketing, delete old scripts not in use (like GA UA?) and make Google ads up on Track - after the shutdown of Ga UA (target groups etc), now sales went down 1/2 since august.

I am looking for a skilled freelancer to debug and fix the issues with my Google Tag Manager (GTM) and tracking codes. The specific requirements for this project include: - Fixing incorrect data tracking: My current tracking codes are not accurately tracking the data, which is affecting the performance of my campaigns. - Updating Facebook pixel: I need the Facebook pixel to be properly implemented and integrated with GTM. Currently, the pixel code is directly placed in the HTML code, and I want it to be managed through GTM. - Removing old scripts: There are some old scripts, like GA UA, that are no longer in use and need to be deleted to streamline the tracking system. - Ensuring Google ads are on track: Since the shutdown of GA UA, my sales have decreased by half. I need the freelancer to make sure my Google ads are properly set up with the new tracking system, getting targeting lists and remarkeitng lists from and customers list from GA4 to Google ads aswell as enhanced conversion tracking, to improve targeting and increase sales. Ad account has halv mill $ in ad spend. Ideal Skills and Experience: - Proficiency in Google Tag Manager (GTM) and Easy fix (with template) Facebook pixel implementation. - Remarketing gads GTM - Strong knowledge of tracking codes and Google Tag Manager and Google Analytics 4 (GA4) and Google Ads. - Experience in GTM debugging and fixing tracking issues. - Familiarity with Google ads and ad targeting / lists from GA4 and similar strategies. Its for a 2 y/o e-com website that was top 20 fastest growing ecom 2020-2022 and now growth is same since all those issues with performance max and GA4 Changed… If you have the expertise to resolve these tracking issues and optimize my campaigns for increased sales,