why is this happening?(related to the 3 dimensioned arrow thingy,idk what it's called)

I was facing some issue about the arrow not appearing when choosing verticles (the dot thing on corners or edges) earlier, I thought it was the gizmo trolling me, but after checking in with an unsaved new project, turns out the arrows.. maybe was turned off (in the gizmo setting thingy), and when i opened the model i was working on, i found out they went back to the original circle thingy at the bottom, instead of at the dot as titled, what happened there? and how do I fix it😭?