Fix GTM/GA4 implementation issues on Squarespace

I have an issue with my GTM/GA4 implementation on Squarespace - the data I'm collecting is not being accurately captured. I understand I need the conversions API set up correctly to ensure the data is correctly piped to google . I have a clear understanding of what data needs to be captured, so I'm just looking for assistance with getting my setup up and running properly. Time is of the essence - I need this resolved as soon as possible to ensure that I'm gathering accurate data.