WordPress ASTRA would not let me customise or change or add themes (HELP ME I’M LOSING MY MIND)

I am very much a beginner to the whole wordpress and astra. i have no background in coding or anything. 

I decided to help my friend set up a website for herself, so i got on youtube and followed a tutorial. 

i used godaddy and got myself hosting and domain and suff. i set those things up. and i went on that (website)/login .. it took me to that wordpress thingy … and the video tutorial asked me to install astra under themes and its plugin under plugin. but after that any of the links i press it keeps showing " 

>This page doesn't seem to exist.

>It looks like the link pointing here was faulty. Maybe try searching?

I tired everything, some links told me to go to setting>readings and fix that homepage thing . i went to permalinks and changed that one .. i tried it with both the new and the old plugin .. i tried deleting everything and reuploading it  .. i tired eveything. when i try using other stuff like oceanvp .. the customise option works but seleting the theme dosent work.

https://preview.redd.it/p4mzisztmyrd1.png?width=1224&format=png&auto=webp&s=26e32255c78e4a9e6e92a601ef0c48b59bfa8d85

I've been doing this for the past 5 hours ! I am very much close to crying.

 

This site will teach you how to build a WordPress website for beginners. We will cover everything from installing WordPress to adding pages, posts, and images to your site. You will learn how to customize your site with themes and plugins, as well as how to market your site online.

Buy WordPress Transfer