I am having problem installing nodebb!

I have tried;

https://www.blogsynthesis.com/install-nodebb-on-digitalocean/

title was saying it will took 5 minutes, im on 4th hours. :D

I am having an error while following this tutorial which is “npm warn enoent enoent no such file or directory open package.json”

I did try npm init command code. It doesn’t work.

After that i did try,

https://www.digitalocean.com/community/questions/how-to-install-nodebb

this guide mongo and redis setup, i had no luck.

I did also try https://nodebb.readthedocs.io/en/latest/installing/os/ubuntu.html.

Then searched on youtube to find installation guide, find one which for ubuntu 14.x version. Applied commands. It does installed at some point without frontend visual, didnt work database forms and etc.

I have no idea what to do. If someone kind enough to help for better guide or tell me what did i do wrong ?