Preview no longer allows me to edit

As of the last few weeks, my preview (when you open pdf documents etc) will not allow me to edit the document at all on my M1 MacBook Air 2021.

• It won't let me highlight using the highlight tool, none the less highlight the text as if I was going to copy and paste it either
• When I insert a textbook, it will allow me to type in it and alter the text etc but it will not let me move that text box using my mouse at all from the middle of the page. It will let me move it if I use exclusively the arrow keys but as you can imagine that is extremely time consuming given the pace of it.

I have tried many things to rectify this, the obvious ones being restarting my laptop, making sure it is updated etc.