Different domain names for blog and other pages

Good morning,

I have ONE installation of wordpress, with the following pages:

Blog
Album
About
Contact

At the moment, the pages are available like that :

https://mysite.com/blog
https://mysite.com/album
https://mysite.com/about
https://mysite.com/contact

I would like to know if there is a way to use a different domain name for the blog so that it can be reachable at :

https://myothersite.com/

I don’t want it to be a simple redirection and I don’t want people to notice that it is in fact https://mysite.com/blog, so a bit like a cloaking (? not sure about that, and not sure that if this is the word, if its secure)

I have the two domains, but I don’t really know how to set things up.

Should I use a plugin, a htaccess, or simply within the domain name provider I should put https://mysite.com/blog and thats all ?

Thank you in advance for your help.

Kind regards,

M.