Sprites not showing and camera issues

I’m trying to add a sprite to my scene, but it doesn’t show up in preview not game
preview: Screenshot - 84afcf0f5253996ebe428a18f1089f04 - Gyazo
ingame: Screenshot - 42e45d023cbdeff5b4ce1b889e15a063 - Gyazo

also why does my background color keep changing to blue (main camera) when I start my game? I dont have any script that is forcing it to change color

p.s.s if I have two scripts in a script folder next to each other, how can I access one of the script directly from the folder instead through game object using another script? (to set values)

bump

If you disable all the scripts in scene, does the background color still change?