A level or world I created keeps appearing on the startup of a new world I try to make regardless if I want to have a blank film and video world

I have tried to restart the unreal engine by re-downloading it, dleteling configuration files about startup world and tried going into world settings and putting none but it keeps re starting at the world I saved called “Main”. Please help, I have no idea how to fix this

The world settings panel in main editor window is to edit currently loaded level. To change level editor loads when you open it, goto project settings. click maps and modes in the big category tree on the left, then set the Editor Startup Map and Game Startup Map in the default maps section.