How to bypass wordpress htaccess - wordpress

Question

The public_html folder contains a wordpress site. I have put a new Angular app in a subfolder called myapp.
so www.domain.com -> wordpress
and wwww.domain.com/myapp -> angular app
Now, if i refresh or try to access an url path (route) in angular, i get the 404 page of the wordpress site.
so the root (public_html) folder have an .htaccess like this :
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress
In myapp folder (angular) i have this one :
RewriteEngine on
RewriteBase /myapp/
RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]
RewriteRule ^(.*) /index.html [NC,L]
Whatever i tries, it always end up as : everything in myapp works ok, (refresh, direct url access etc) BUT the www.domain.com -> myapp!!!
Or
www.domain.com still -> wordpress
But
My angular app give me 404 on refresh and direct url access!
This is my .htaccess i consider should works
RewriteEngine on
RewriteBase /
# Condition to get in my angular app
RewriteCond %{REQUEST_URI} ^/myapp/.*$
RewriteRule ^.*$ - [NC,L]
RewriteRule ^(.*) /myapp/index.html [NC,L]
#Condition to go in wordpress
RewriteCond %{REQUEST_URI} !^/myapp/.*$
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
please help!!

Answer 1

Finally!!! it worked!!!
Lesson learned!!! dont try to mix .htaccess of different folders!!
The wordpress .htaccess didnt need any changes.
The Angular one (subfolder) changed like this :
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]
RewriteRule ^(.*) index.html [NC,L]
So basically 2 things!!!
Removed the RewriteBase /myapp/
Removed the / in RewriteRule ^(.*) index.html [NC,L]
Hope this will help someone else ;-)