speed up my wordpress site

I am using the astra theme in wordpress and need tweaks to speed up the site to make it more seo friendly, and google friendly. The site is very small with very few pages and was fast until woocommerce and paypal payments were installed. You must be able to know how to make the following better:
First Contentful Paint
Speed Index
Largest Contentful Paint
Time to Interactive
Total Blocking Time
Cumulative Layout Shift
Compress components with gzip
Add Expires headers
Reduce DNS lookups
Make fewer HTTP requests
Add google analytics