.htaccess change wordpress hompage but keep the link - regex

Question

example.com/wp
or
example.com/wp/
<- This is what homepage link used to be like and I'm trying to keep it this way.
But I want the server to serve some static page from another subfolder as a front page (but to keep all the other wp contents at the same places)
My static page (several of them tbh) are stored in root/subf1/
I was able to redirect to the desired subfolder, but the path also shows up in the URL.
Is it possible to change example.com/subf1 to example/wp?
Here's my current htaccess. Maybe I need to create another one in a static page folder?
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{HTTP_HOST} ^(www.)?example.com$
RewriteCond %{REQUEST_URI} !^/subf1/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /test/page/$1
RewriteCond %{HTTP_HOST} ^(www.)?example.com$
RewriteRule ^(/)?$ /subf1/index.html [L]
</IfModule>
RedirectMatch "^/wp$" "https://example.com/subf1/"
Thank you a lot for your time

Answer 1

RedirectMatch does only "external redirections", so you probably want internal redirection with a RewriteRule (without the R flag).
So instead of RedirectMatch try:
RewriteRule ^wp$ https://example.com/subf1/ [L]
PS: Generally it is good to go for redirect/redirectmatch instead of going for mod_rewrite, but if you are already using mod_rewrite directives it will be less confusing to stick to it and not mix direcitves from one or the other.