solve tracking issue on google analytics

I am looking for a freelancer who can help me solve a conversion tracking issue on my custom-built website.

Specific requirements for the project include:

- Expertise in Google Analytics and experience troubleshooting conversion tracking issues
- Familiarity with custom-built websites
- Ability to work without access to the backend code of the website only by google tag manager

If you have the necessary skills and experience, please submit your proposal.