Linux Nginx on ubuntu 502 bad gateway

[Joriku]

any ideas?
following: Installing phpMyAdmin for Nginx on Ubuntu 18.04 | DevAnswers.co (https://devanswers.co/installing-phpmyadmin-nginx-ubuntu-18-04/)

on: Installing Nginx, MySQL, PHP (LEMP) Stack on Ubuntu 18.04 | DevAnswers.co (https://devanswers.co/installing-nginx-mysql-php-lemp-stack-ubuntu-18-04/)
8: Test PHP
I get the same, Bad Gateway.

I gave permissions

chown -R www-data:www-data /var/www

&

chmod -R 755 /var/www/html

 

[Nekiro]

wrongly configured nginx

 

[Joriku]

wrongly configured nginx

Any solution to fix this?

 

[StreamSide]

I really dont like nginx /don't know why/ buy I'm currently using caddy, its easy to use and really good (https included)

 

[Joriku]

I really dont like nginx /don't know why/ buy I'm currently using caddy, its easy to use and really good (https included)

Thank you for your awnser, I reinstalled the system and installed Apache instead.
Therd Closed.