Not sure what exactly you are referring to.
But your image might have Text Wrap applied.
And for your text frame you can go to the Text Frame Options and choose Ignore Text Wrap.
Is paragraph alignment set to right-aligned?
With just the text tool selected, but no text boxes selected (or made), any change to the style of paragraphs or fonts etc is 'set' for the document. If you have clicked on the right alignment tool with nothing selected, then everything from then onwards will default to right align.
If every document you've worked on is doing this, then open InDesign with no document open (so just the panels showing, but no file/doc open) and select left align with the text tool in use. Any setting made with InDesign like this, is default for any new document created. Colours, alignment, optical kerning, fonts, sizes, leading etc etc changed in this state, is the new default.