The save file dialog box opens in a very weird and annoying format

Every time I try to download or save a file the finder format is really weird and I have to 'strectch' it open every single time. This is really annoying and after searching the web I couldn't find any solution on this problem. For reference; I'm using os big sur.

I've attached two images. The first one is how it opens, and the second one is how it 'should' be. Any help would be greatly appreciated!