Some problem for SEO Analysis

Hi support,

About SEO Analysis, we have some problem need your help.

Problem 1:
In SEO Analysis item “Image ALT Attributes”, we got fail message:
Some images on your page have no alt attribute. (74)

We found one of solution, can turn on follow setting:
General Setting > Image > Add missing ALT attributes
but,
when we turn on it, our website some pages will show strange problem, please see follows screenshot:
https://ibb.co/H2wcXHp
https://ibb.co/6vb3GDQ

Could you help us check this problem? how to solved it?
or
if we don’t “turn on Add missing ALT attributes”, how to solve “Some images on your page have no alt attribute.” problem? how to do?

Problem 2:
Same in SEO Analysis, item “Keywords in Title & Description”, fail message is:
No keywords found in the page title and the description.

We don’t know where we need to set and how to solved it, could you teaching us? or have any document about this can refer to?

Looking forwards to your reply.

Thank you,
Best Regards.