Hello there, my name is Alex, i'm a Shopify Expert and my opinion is that you will be in better hands with an experienced freelancer such as myself than with all these weird agencies that are writing 99999 words, that's why I can assure you I can be a great fit for your project!
I see that you need to check if Klaviyo Web Tracking is installed, no worries I can do that immediately and install it if necessary, I will also take a look at the pagespeed and try to improve it only if you want, so your customers can enjoy the best time on your store, I really hope we can work together, thank you for your time!