NGINX reverse proxy passing traffic to another domain

I have 2 servers A and B I've configured my server A with NGINX and a website. I want to reverse proxy all the traffic that is coming to my server A with the /path1/ to my server B's domain with /ptah2/.

my server A NGINX config:

    server {
        listen 443 ssl http2;
        listen [::]:443 ssl http2;
        ssl_certificate       /ssl/certificate.crt;
        ssl_certificate_key   /ssl/privkey.key;
        ssl_protocols         TLSv1.2 TLSv1.3;
        ssl_ecdh_curve        X25519:P-256:P-384:P-521;
        server_name           server.a.domain;
        index index.html index.htm;
        root  /www/html;
        error_page 400 = /400.html;

        ssl_stapling on;
        ssl_stapling_verify on;
        add_header Strict-Transport-Security "max-age=63072000" always;

        location /path1/
        {
            proxy_redirect off;
        proxy_pass server.b.domain;
            proxy_http_version 1.1;
            proxy_set_header X-Real-IP \$remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host $http_host;
        }
}
    server {
        listen 80;
        listen [::]:80;
        server_name server.a.domain;
        return 301 https://$http_host$request_uri;
    }

my webpage is loading normally and its ok, But my data is not reaching server B when im using /path2/

I want to pass the traffic exactly as is to server B with /path2/ if the /path1/ is called.