If they're bringing in traffic (check GSC), you could find keywords that people actually search for in GSC and optimize your article for that. Add pieces of content regarding those KWsI am working on redesigning one blog layout. There are older posts, not properly seo optimized.
Should I go through all of these and optimize them now?
If they're bringing in traffic, you could find keywords that people actually search for in GSC and optimize your article for that. Add pieces of content regarding those KWs
Yes you should optimise them as it’ll increase your seo score