Same as above:
Can I create a CNAME record to point a subdomain to a webpage e.g. blog.example.com -> example.com/blog?
I would also like to know if I can do this to point subdomains to webpages on different websites.
e.g. bluesky.example.com -> bsky.app/profile/example.com
Easiest way to accomplish what you want: host a static html page on blog.example.com that redirects the user to example.com/blog:
https://stackoverflow.com/questions/5411538/how-to-redirect-one-html-page-to-another-on-load
I’ll note that a server side redirect would be preferred if this is for professional or business use. For personal shit, go nuts