I think my Blender is broken because I've tried everything I could source from the internet and spent hours just exploring blender.
I have 2 problems but I'll start with the environment texture. In the shade editor, I connected the Environment Texture (I uploaded a jpg image) to the Background and to the World Output. I also tried connecting the Environment Texture just to the World Output. I checked the box for "USE NODES" and in the World Properties it says the nodes are connected and yet my jpg isn't displayed. It is still the viewport display color. In the viewport drop down I made sure that WOLRD is selected. I even connected the nodes in the Shading tab, still nothing. (photos below)
The other problem I have is similar but it's for the material output. In the shade editor, I connected the Principled BDSF to the material output, checked the nodes are connected properly and nothing is working. The only way I can change my material is by disconnecting the nodes and using the Material Properties in the editors panel (there are only 3... metallic, specular, roughness).
I've googled, read forums, restarted my computer, and nothing has worked. Am I missing something or should I throw my computer away?