Web Developer/SEO Expert to fix minor errors in wordpress

I’m looking for someone who can fix the following SEO errors messagesin in wordpress. I also have Rank Math Pro which provides how to fix instructions.

1. Error Message : How to fixSome images on your page have no alt attribute. (5)
2. Error Message: How to fixSome CSS files don’t seem to be minified.
3. Error Message: How to fixYour page makes 35 requests. More than 20 requests can result in slow page loading.
4.Error Message: The size of the HTML document is 83 Kb, over the average of 33 Kb and our recommendation of 50 Kb.
5. Enter provided focus keywords in posts