Nginx configuration to have served both static files sites than a reverse proxy for a .net core app - asp.net-core

Question

I installed Nginx on my Ubuntu 20.04 machine and I'm trying to serve a couple of simple static file along with a Asp.Net Core (MVC) app using Nginx as a reverse proxy.
What I would like to achieve:
http://example.com -> /var/www/StaticSiteFolder1/index.html
http://example.com/Site2 -> /var/www/StaticSiteFolder2/index.html
http://example.com/Site3 -> /var/www/StaticSiteFolder3/index.html
http://example.com/NetCoreApp -> get the netcore app running on http://localhost:5000
What I have done so far:
Configured all static sites with the following .conf file inside /etc/nginx/sites-enabled:
server {
listen 80;
listen [::]:80;
server_name myServer;
root /var/www/;
location / {
root /var/www/StaticSiteFolder1;
index index.html index.htm;
try_files $uri $uri/ =404;
}
location /StaticSiteFolder2 {
index index.html index.htm;
try_files $uri $uri/ =404;
}
location /StaticSiteFolder3 {
index index.html index.htm;
try_files $uri $uri/ =404;
}}
Created another .conf file for the reverse proxy, in the same directory:
server {
listen 80;
listen [::]:80;
server_name myServer;
root /var/www/;
location /NetCoreApp {
proxy_pass http://localhost:5000;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection keep-alive;
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-For $scheme;
}}
If I keep only the first one the static sites are served correctly.
If I leave only the second one changing "location /NetCoreApp" with "location /" and putting default_server in front listen 80 I have my netcore app correctly working on http://example.com.
I feel that it shouldn't be something so difficult but it's driving me crazy right now!
Thanks!