I think the red parts are the main reasons that slow your site down. Try to fix that first.
Especially, try to fix the third-party code problem first. You can use a third-party to check that for you. There are many free apps on the app store.
Welcome to the Shopify community!
This is Jay from Oakleaf Infoway. I will help you to accelerate the website speed is up to 80% to 28.
It can be done by some code minifying, Image optimation, Fix broken link, Remove unnecessary third party codes.
And it will take 2 working days for the delivery.
All you need to do is just add me over on skype/Mail for the price.
Email id: firstname.lastname@example.org